diff --git a/CHANGELOG b/CHANGELOG
index a67e95a91f572f44187eb94d8ed1e194f42bc1d8..029fdce916217331a7ea173927acb1cb55319f24 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -5,10 +5,34 @@ All notable changes to this project will be documented in this file.
 
 -------------------------------------------------------------------------------
 
+## [0.2.0] - 2021-09-28            
+
+### Added
+
+### Changed
+- Fusion of CTS for atom elements (entity, feature, verb, ...)
+- Addition of seeds in system ontology
+- Abandonment of parameter ontology for frame ontologies 
+
+
+-------------------------------------------------------------------------------
+
+## [0.1.3] - 2021-09-17                 Demo CS 2
+
+### Added
+- Relation between classes/instances and requirements 
+- Extraction of events as classes and object properties
+- Extraction of state properties as classes and object properties
+- Batch execution for CTS (Compositional Transduction Schemes)
+
+### Changed
+- Order of CTS (Compositional Transduction Schemes)
+
+
 ## [0.1.2] - 2021-09-08                 Demo CS 1
 
 ### Added
-- Trandusction Schemes to extract Entity classes and instances
+- Transduction Schemes to extract Entity classes and instances
 - Transduction Schemes to extract Feature classes
 - Net object to refine the inclusion of class relations 
 
diff --git a/config/semantic-net.ttl b/config/semantic-net.ttl
index c2b0a172cd88cb025af1f03bd77d02a65c92ce82..12672eb16b77723d5857b8a83a88b21f545a3e1e 100644
--- a/config/semantic-net.ttl
+++ b/config/semantic-net.ttl
@@ -15,30 +15,25 @@ net:Instance
   rdfs:label "Semantic Net Instance" ;
   rdfs:subClassOf net:Structure ;
 .
-net:Net_Type
-  rdf:type owl:Class ;
-  rdfs:label "Semantic Net Type" ;
-  rdfs:subClassOf net:Structure ;
-.
 net:Object
   rdf:type owl:Class ;
   rdfs:label "Object using in semantic net instance" ;
   rdfs:subClassOf net:Structure ;
 .
-net:Object_Type
-  rdf:type owl:Class ;
-  rdfs:label "Object Type" ;
-  rdfs:subClassOf net:Structure ;
-.
 net:Structure
   rdf:type owl:Class ;
   rdfs:comment "A semantic net captures a set of nodes, and associates this set with type(s) and value(s)." ;
   rdfs:label "Semantic Net Structure" ;
 .
+net:Type
+  rdf:type owl:Class ;
+  rdfs:label "Semantic Net Type" ;
+  rdfs:subClassOf net:Structure ;
+.
 net:abstraction
   rdf:type owl:Class ;
   rdfs:label "abstraction" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:abstractionClass
   rdf:type rdf:Property ;
@@ -48,7 +43,12 @@ net:abstractionClass
 net:atom
   rdf:type owl:Class ;
   rdfs:label "atom" ;
-  rdfs:subClassOf net:Object_Type ;
+  rdfs:subClassOf net:Type ;
+.
+net:atomOf
+  rdf:type rdf:Property ;
+  rdfs:label "atom of" ;
+  rdfs:subPropertyOf net:type ;
 .
 net:atomType
   rdf:type rdf:Property ;
@@ -58,7 +58,7 @@ net:atomType
 net:class
   rdf:type owl:Class ;
   rdfs:label "class" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:classUri
   rdf:type rdf:Property ;
@@ -68,38 +68,28 @@ net:classUri
 net:class_list
   rdf:type owl:Class ;
   rdfs:label "classList" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:complement
   rdf:type owl:Class ;
   rdfs:label "complement" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:complement_mod_list
   rdf:type owl:Class ;
   rdfs:label "complement mod list" ;
   rdfs:subClassOf net:mod_list ;
 .
-net:concept
-  rdf:type rdf:Property ;
-  rdfs:label "concept "@fr ;
-  rdfs:subPropertyOf net:objectValue ;
-.
 net:entity
   rdf:type owl:Class ;
   rdfs:label "entity" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:entityClass
   rdf:type rdf:Property ;
   rdfs:label "entity class" ;
   rdfs:subPropertyOf net:objectValue ;
 .
-net:entityInstance
-  rdf:type rdf:Property ;
-  rdfs:label "entity instance" ;
-  rdfs:subPropertyOf net:objectValue ;
-.
 net:entity_class_list
   rdf:type owl:Class ;
   rdfs:label "entityClassList" ;
@@ -113,12 +103,12 @@ net:entity_mod_list
 net:event
   rdf:type owl:Class ;
   rdfs:label "event" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:feature
   rdf:type owl:Class ;
   rdfs:label "feature" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:featureClass
   rdf:type rdf:Property ;
@@ -135,6 +125,11 @@ net:has_atom
   rdfs:label "has atom" ;
   rdfs:subPropertyOf net:has_object ;
 .
+net:has_concept
+  rdf:type rdf:Property ;
+  rdfs:label "concept "@fr ;
+  rdfs:subPropertyOf net:objectValue ;
+.
 net:has_entity
   rdf:type rdf:Property ;
   rdfs:label "has entity" ;
@@ -145,11 +140,21 @@ net:has_feature
   rdfs:label "has feature" ;
   rdfs:subPropertyOf net:has_object ;
 .
+net:has_instance
+  rdf:type rdf:Property ;
+  rdfs:label "entity instance" ;
+  rdfs:subPropertyOf net:objectValue ;
+.
 net:has_mainClass
   rdf:type rdf:Property ;
   rdfs:label "has main class" ;
   rdfs:subPropertyOf net:has_object ;
 .
+net:has_mother_class
+  rdf:type rdf:Property ;
+  rdfs:label "has mother class" ;
+  rdfs:subPropertyOf net:objectValue ;
+.
 net:has_node
   rdf:type rdf:Property ;
   rdfs:label "UNL Node" ;
@@ -160,6 +165,11 @@ net:has_object
   rdfs:label "relation" ;
   rdfs:subPropertyOf net:property ;
 .
+net:has_parent_class
+  rdf:type rdf:Property ;
+  rdfs:label "parent class" ;
+  rdfs:subPropertyOf net:objectValue ;
+.
 net:has_possible_domain
   rdf:type rdf:Property ;
   rdfs:label "has possible domain" ;
@@ -213,7 +223,7 @@ net:modCat2
 net:mod_list
   rdf:type owl:Class ;
   rdfs:label "modList" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:objectAttribute
   rdf:type rdf:Property ;
@@ -229,11 +239,6 @@ net:objectValue
   rdfs:label "valuations"@fr ;
   rdfs:subPropertyOf net:objectAttribute ;
 .
-net:parentClass
-  rdf:type rdf:Property ;
-  rdfs:label "parent class" ;
-  rdfs:subPropertyOf net:objectValue ;
-.
 net:parentClassUri
   rdf:type rdf:Property ;
   rdfs:label "parent class uri" ;
@@ -246,7 +251,7 @@ net:property
 net:state_property
   rdf:type owl:Class ;
   rdfs:label "stateProperty" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:type
   rdf:type rdf:Property ;
@@ -256,7 +261,7 @@ net:type
 net:verb
   rdf:type owl:Class ;
   rdfs:label "verb" ;
-  rdfs:subClassOf net:Net_Type ;
+  rdfs:subClassOf net:Type ;
 .
 net:verbClass
   rdf:type rdf:Property ;
diff --git a/config/transduction-schemes.ttl b/config/transduction-schemes.ttl
index 34b5e0ecad88b98c64a63d6801def86376e6e6e1..d1ca902d36d0de223ec0aefc67b64ea23cd5d7a7 100644
--- a/config/transduction-schemes.ttl
+++ b/config/transduction-schemes.ttl
@@ -60,7 +60,7 @@ WHERE {
    ?net1 net:type net:abstraction.
    ?net1 net:has_structure ?req.
    ?net1 net:abstractionClass ?abstractionClass.
-   ?net1 net:concept ?abstractionConcept.	
+   ?net1 net:has_concept ?abstractionConcept.	
    # Filter: entity not present in a class list
    FILTER NOT EXISTS  { ?net2 net:class2 ?abstractionConcept}
    # URI: class
@@ -107,13 +107,13 @@ WHERE {
    ?net1 net:entityClass ?entityClass.
    ?net1 net:has_node ?uw2, ?uw3.
    ?net1 net:has_mainClass ?mainEntityObject.	
-   ?mainEntityObject net:concept ?mainEntity.
+   ?mainEntityObject net:has_concept ?mainEntity.
    ?net1 net:has_subClass ?subEntityObject2, ?subEntityObject3.	
    ?subEntityObject2 net:concept ?subEntity2.
    ?subEntityObject2 net:has_node ?uw2.
-   ?subEntityObject3 net:concept ?subEntity3.
+   ?subEntityObject3 net:has_concept ?subEntity3.
    ?subEntityObject3 net:has_node ?uw3.
-   ?subEntityObject3 net:entityInstance ?mainInstance.	
+   ?subEntityObject3 net:has_instance ?mainInstance.	
    # extension: disjunction of UW
    ?uw2 unl:and ?uw3.
   # --old --- FILTER NOT EXISTS  { ?net2 net:has_subClass ?mainEntity }.
@@ -124,13 +124,8 @@ WHERE {
    BIND (strbefore(?uw2Label, '(') AS ?concept2)
    BIND (strbefore(?uw3Label, '(') AS ?concept3)
    BIND (concat(?concept2, '-or-', ?concept3) AS ?concept23)
-   # --old --- FILTER ( STRSTARTS(?subEntity2, ?concept2) ).
-   # --old --- FILTER ( STRSTARTS(?subEntity3, ?concept3) ).
-   # -- old --- BIND (concat(?concept2, '_', ?mainEntity) AS ?subEntity2).
-   # -- old --- BIND (concat(?concept3, '_', ?mainEntity) AS ?subEntity3).
    BIND (concat(?concept23, '_', ?mainEntity) AS ?subEntity23).
    # URI (for classes)
-   # -- old --- cprm:Config_Parameters cprm:baseURI ?baseURI.
    fprm:System_Ontology fprm:frameURI ?frameURI.
    BIND (concat( ?frameURI, ?entityClass) AS ?s1).
    BIND (concat(?s1, '#', ?mainEntity) AS ?s2).
@@ -181,13 +176,13 @@ WHERE {
    ?net1 net:entityClass ?entityClass.
    ?net1 net:has_node ?uw2, ?uw3.
    ?net1 net:has_mainClass ?mainEntityObject.	
-   ?mainEntityObject net:concept ?mainEntity.
+   ?mainEntityObject net:has_concept ?mainEntity.
    ?net1 net:has_subClass ?subEntityObject2, ?subEntityObject3.	
-   ?subEntityObject2 net:concept ?subEntity2.
+   ?subEntityObject2 net:has_concept ?subEntity2.
    ?subEntityObject2 net:has_node ?uw2.
-   ?subEntityObject3 net:concept ?subEntity3.
+   ?subEntityObject3 net:has_concept ?subEntity3.
    ?subEntityObject3 net:has_node ?uw3.	
-   ?subEntityObject3 net:entityInstance ?mainInstance.	
+   ?subEntityObject3 net:has_instance ?mainInstance.	
    # extension: disjunction of UW
    ?uw2 unl:or ?uw3.
   # --old --- FILTER NOT EXISTS  { ?net2 net:has_subClass ?mainEntity }.
@@ -198,13 +193,8 @@ WHERE {
    BIND (strbefore(?uw2Label, '(') AS ?concept2)
    BIND (strbefore(?uw3Label, '(') AS ?concept3)
    BIND (concat(?concept2, '-or-', ?concept3) AS ?concept23)
-   # --old --- FILTER ( STRSTARTS(?subEntity2, ?concept2) ).
-   # --old --- FILTER ( STRSTARTS(?subEntity3, ?concept3) ).
-   # -- old --- BIND (concat(?concept2, '_', ?mainEntity) AS ?subEntity2).
-   # -- old --- BIND (concat(?concept3, '_', ?mainEntity) AS ?subEntity3).
    BIND (concat(?concept23, '_', ?mainEntity) AS ?subEntity23).
    # URI (for classes)
-   # -- old --- cprm:Config_Parameters cprm:baseURI ?baseURI.
    fprm:System_Ontology fprm:frameURI ?frameURI.
    BIND (concat( ?frameURI, ?entityClass) AS ?s1).
    BIND (concat(?s1, '#', ?mainEntity) AS ?s2).
@@ -249,12 +239,13 @@ CONSTRUCT {
 WHERE {
    # net1: entity
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?req.
    ?net1 net:has_atom ?atomObject1.
-   ?atomObject1 net:parentClass ?entityClass.	
-   ?atomObject1 net:concept ?entityConcept.
-   ?atomObject1 net:entityInstance ?mainInstance. 
+   ?atomObject1 net:has_parent_class ?entityClass.	
+   ?atomObject1 net:has_concept ?entityConcept.
+   ?atomObject1 net:has_instance ?mainInstance. 
    # Filter: entity not present in a class list
    FILTER NOT EXISTS  { ?net2 net:has_subClass ?entityConcept}
    # URI (for classes)
@@ -311,16 +302,16 @@ WHERE {
    ?net1 net:has_structure ?req.
    ?net1 net:has_verb ?verbObject1.
    ?verbObject1 net:verbClass ?verbClass.	
-   ?verbObject1 net:concept ?verbConcept.
+   ?verbObject1 net:has_concept ?verbConcept.
    ?net1 net:has_actor ?actorObject1.
-   ?actorObject1 net:parentClass ?actorClass.	
-   ?actorObject1 net:concept ?actorConcept.
-   ?actorObject1 net:entityInstance ?actorInstance.
+   ?actorObject1 net:has_parent_class ?actorClass.	
+   ?actorObject1 net:has_concept ?actorConcept.
+   ?actorObject1 net:has_instance ?actorInstance.
    ?actorObject1 net:instanceUri ?actorInstanceUri.  
    ?net1 net:has_target ?targetObject1.
-   ?targetObject1 net:parentClass ?targetClass.	
-   ?targetObject1 net:concept ?targetConcept.
-   ?targetObject1 net:entityInstance ?targetInstance. 
+   ?targetObject1 net:has_parent_class ?targetClass.	
+   ?targetObject1 net:has_concept ?targetConcept.
+   ?targetObject1 net:has_instance ?targetInstance. 
    ?targetObject1 net:instanceUri ?targetInstanceUri. 
    # Label: event
    BIND (concat(?actorConcept, '-', ?verbConcept) AS ?e1).
@@ -339,24 +330,6 @@ WHERE {
    BIND (concat(?o1, '#', ?verbConcept) AS ?o2).
    BIND (uri( ?o1) AS ?eventObjectPropertyUri).
    BIND (uri( ?o2) AS ?newEventObjectPropertyUri).
-   # URI (for instance)
-   # -- old --- BIND (concat( ?frameURI, ?eventClass) AS ?i1).
-   # -- old --- BIND (concat(?i1, '_', ?mainInstance) AS ?i2).
-   # -- old --- BIND (uri(?i2) AS ?mainInstanceUri).
-   # URI (for Entity classes)
-   # -- old --- fprm:System_Ontology fprm:frameURI ?frameURI.
-   # -- old --- BIND (concat( ?frameURI, ?actorClass) AS ?e1a).
-   # -- old --- BIND (concat(?e1a, '#', ?actorConcept) AS ?e1b).
-   # -- old --- BIND (concat(?e1a, '_', ?actorInstance) AS ?e1c).
-   # -- old --- BIND (uri(?e1a) AS ?actorClassUri).
-   # -- old --- BIND (uri(?e1b) AS ?actorUri).
-   # -- old --- BIND (uri(?e1c) AS ?actorInstanceUri).
-   # -- old --- BIND (concat( ?frameURI, ?targetClass) AS ?e2a).
-   # -- old --- BIND (concat(?e2a, '#', ?targetConcept) AS ?e2b).
-   # -- old --- BIND (concat(?e2a, '_', ?targetInstance) AS ?e2c).
-   # -- old --- BIND (uri(?e2a) AS ?targetClassUri).
-   # -- old --- BIND (uri(?e2b) AS ?targetUri).
-   # -- old --- BIND (uri(?e2c) AS ?targetInstanceUri).
 }""" ;
   sh:order 3.1 ;
 .
@@ -385,11 +358,12 @@ CONSTRUCT {
 WHERE {
    # net1: feature
    ?net1 a net:Instance.
-   ?net1 net:type net:feature.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Feature.
    ?net1 net:has_structure ?req.
    ?net1 net:has_atom ?atomObject1.
-   ?atomObject1 net:parentClass ?featureClass.
-   ?atomObject1 net:concept ?featureConcept.	
+   ?atomObject1 net:has_parent_class ?featureClass.
+   ?atomObject1 net:has_concept ?featureConcept.	
    # Filter: entity not present in a class list
    FILTER NOT EXISTS  { ?net2 net:class2 ?featureConcept}
    # URI: class
@@ -434,20 +408,17 @@ WHERE {
    ?net1 net:has_structure ?req.
    ?net1 net:entityClass ?entityClass.
    ?net1 net:has_mainClass ?mainEntityObject.	
-   ?mainEntityObject net:concept ?mainEntity.
+   ?mainEntityObject net:has_concept ?mainEntity.
    ?net1 net:has_subClass ?subEntityObject.	
-   ?subEntityObject net:concept ?subEntity.
-   ?subEntityObject net:entityInstance ?mainInstance.	
+   ?subEntityObject net:has_concept ?subEntity.
+   ?subEntityObject net:has_instance ?mainInstance.	
    # Filter -- old --- FILTER NOT EXISTS  { ?net2 net:has_subClass ?mainEntity}	
    # URI (for classes)
-   # -- old --- BIND (concat(?concept2, '_', ?mainEntity) AS ?subEntity).
-   # -- old --- cprm:Config_Parameters cprm:baseURI ?baseURI.
    fprm:System_Ontology fprm:frameURI ?frameURI.
    fprm:System_Entity rdfs:label ?entityLabel.
    BIND (concat( ?frameURI, ?entityClass) AS ?s1).
    BIND (concat(?s1, '#', ?mainEntity) AS ?s2).
    BIND (concat(?s1, '#', ?subEntity) AS ?s3).
-   # -- old --- BIND (uri( ?s1) AS ?entityUri).
    BIND (uri(?s2) AS ?mainEntityUri).
    BIND (uri(?s3) AS ?subEntityUri).
    # URI (for instance)
@@ -490,22 +461,22 @@ CONSTRUCT {
    ?actorInstanceUri ?newStatePropertyObjectPropertyUri ?targetInstanceUri.
 }
 WHERE {
-   # net1: entity
+   # net1: state property
    ?net1 a net:Instance.
    ?net1 net:type net:state_property.
    ?net1 net:has_structure ?req.
    ?net1 net:has_verb ?verbObject1.
    ?verbObject1 net:verbClass ?verbClass.	
-   ?verbObject1 net:concept ?verbConcept.
+   ?verbObject1 net:has_concept ?verbConcept.
    ?net1 net:has_actor ?actorObject1.
-   ?actorObject1 net:entityClass ?actorClass.	
-   ?actorObject1 net:concept ?actorConcept.
-   ?actorObject1 net:entityInstance ?actorInstance.
+   ?actorObject1 net:has_parent_class ?actorClass.	
+   ?actorObject1 net:has_concept ?actorConcept.
+   ?actorObject1 net:has_instance ?actorInstance.
    ?actorObject1 net:instanceUri ?actorInstanceUri.  
    ?net1 net:has_target ?targetObject1.
-   ?targetObject1 net:entityClass ?targetClass.	
-   ?targetObject1 net:concept ?targetConcept.
-   ?targetObject1 net:entityInstance ?targetInstance. 
+   ?targetObject1 net:has_parent_class ?targetClass.	
+   ?targetObject1 net:has_concept ?targetConcept.
+   ?targetObject1 net:has_instance ?targetInstance. 
    ?targetObject1 net:instanceUri ?targetInstanceUri. 
    # Label: event
    BIND (concat(?actorConcept, '-', ?verbConcept) AS ?e1).
@@ -576,8 +547,8 @@ WHERE {
    ?net1 net:has_structure ?req.
    ?net1 net:has_verb ?verbObject1.
    ?verbObject1 net:verbClass ?verbClass.	
-   ?verbObject1 net:concept ?verbConcept.
-   # -- old --- ?verbObject1 net:entityInstance ?mainInstance. 
+   ?verbObject1 net:has_concept ?verbConcept.
+   # -- old --- ?verbObject1 net:has_instance ?mainInstance. 
    # Filter: entity not present in a class list
    FILTER NOT EXISTS  { ?net2 net:has_subClass ?verbConcept}
    # URI (for classes)
@@ -686,14 +657,14 @@ WHERE {
    ?net1 net:type net:entity_class_list.
    ?net1 net:entityClass ?entityClass.	
    ?net1 net:has_subClass ?subEntityObject.	
-   ?subEntityObject net:concept ?subEntity.	
+   ?subEntityObject net:has_concept ?subEntity.	
    ?subEntityObject net:has_feature ?featureObject.	
    # object: feature
    ?featureObject a net:Object.
    ?featureObject net:objectType sys:Feature.
    ?featureObject net:has_node ?FeatureUW.
-   ?featureObject net:featureClass ?featureClass.
-   ?featureObject net:concept ?featureConcept.
+   ?featureObject net:has_parent_class ?featureClass.
+   ?featureObject net:has_concept ?featureConcept.
    # URI: entity class
    fprm:System_Ontology fprm:frameURI ?frameURI.
    fprm:System_Entity rdfs:label ?entityLabel.
@@ -742,13 +713,15 @@ WHERE {
    ?net1 net:has_verb ?verbObject.
    # net2: entity (actor)
    ?net2 a net:Instance.
-   ?net2 net:type net:entity.
+   ?net2 net:type net:atom.
+   ?net2 net:atomOf sys:Entity.
    ?net2 net:has_structure ?req.
    ?net2 net:has_node ?uw2.
    ?net2 net:has_atom ?actorObject.
    # net3: entity (target)
    ?net3 a net:Instance.
-   ?net3 net:type net:entity.
+   ?net3 net:type net:atom.
+   ?net3 net:atomOf sys:Entity.
    ?net3 net:has_structure ?req.
    ?net3 net:has_node ?uw3.
    ?net3 net:has_atom ?targetObject.
@@ -760,12 +733,12 @@ WHERE {
    ?uw2 unl:has_id ?uw2Id.
    ?uw3 unl:has_id ?uw3Id.
    # Possible domain/range
-   ?actorObject net:entityInstance ?actorObjectInstance.
-   ?allActorObject net:entityInstance ?actorObjectInstance.
-   ?allActorObject net:concept ?domainClass.	
-   ?targetObject net:entityInstance ?targetObjectInstance.
-   ?allTargetObject net:entityInstance ?targetObjectInstance.
-   ?allTargetObject net:concept ?rangeClass.	   
+   ?actorObject net:has_instance ?actorObjectInstance.
+   ?allActorObject net:has_instance ?actorObjectInstance.
+   ?allActorObject net:has_concept ?domainClass.	
+   ?targetObject net:has_instance ?targetObjectInstance.
+   ?allTargetObject net:has_instance ?targetObjectInstance.
+   ?allTargetObject net:has_concept ?rangeClass.	   
    # URI (for Event Net)
    cprm:Config_Parameters cprm:netURI ?netURI.
    net:event rdfs:label ?eventLabel.
@@ -810,13 +783,15 @@ WHERE {
    ?net1 net:has_verb ?verbObject.
    # net2: entity (actor)
    ?net2 a net:Instance.
-   ?net2 net:type net:entity.
+   ?net2 net:type net:atom.
+   ?net2 net:atomOf sys:Entity.
    ?net2 net:has_structure ?req.
    ?net2 net:has_node ?uw2.
    ?net2 net:has_atom ?actorObject.
    # net3: entity (target)
    ?net3 a net:Instance.
-   ?net3 net:type net:entity.
+   ?net3 net:type net:atom.
+   ?net3 net:atomOf sys:Entity.
    ?net3 net:has_structure ?req.
    ?net3 net:has_node ?uw3.
    ?net3 net:has_atom ?targetObject.
@@ -828,12 +803,12 @@ WHERE {
    ?uw2 unl:has_id ?uw2Id.
    ?uw3 unl:has_id ?uw3Id.
    # Possible domain/range
-   ?actorObject net:entityInstance ?actorObjectInstance.
-   ?allActorObject net:entityInstance ?actorObjectInstance.
-   ?allActorObject net:concept ?domainClass.	
-   ?targetObject net:entityInstance ?targetObjectInstance.
-   ?allTargetObject net:entityInstance ?targetObjectInstance.
-   ?allTargetObject net:concept ?rangeClass.	   
+   ?actorObject net:has_instance ?actorObjectInstance.
+   ?allActorObject net:has_instance ?actorObjectInstance.
+   ?allActorObject net:has_concept ?domainClass.	
+   ?targetObject net:has_instance ?targetObjectInstance.
+   ?allTargetObject net:has_instance ?targetObjectInstance.
+   ?allTargetObject net:has_concept ?rangeClass.	   
    # URI (for State Property Net)
    cprm:Config_Parameters cprm:netURI ?netURI.
    net:state_property rdfs:label ?statePropertyLabel.
@@ -860,29 +835,29 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 CONSTRUCT {
    # Object: feature 2
    ?newFeature2 a net:Object.
-   ?newFeature2 net:objectType sys:Feature.
+   ?newFeature2 net:objectType \"Feature\".
    ?newFeature2 net:has_node ?uw2.
-   ?newFeature2 net:featureClass ?featureClass.
-   ?newFeature2 net:concept ?concept2.
+   ?newFeature2 net:has_parent_class ?featureClass.
+   ?newFeature2 net:has_concept ?concept2.
    # Object: feature 3
    ?newFeature3 a net:Object.
-   ?newFeature3 net:objectType sys:Feature.
+   ?newFeature3 net:objectType \"Feature\".
    ?newFeature3 net:has_node ?uw3.
-   ?newFeature3 net:featureClass ?featureClass.
-   ?newFeature3 net:concept ?concept3.
+   ?newFeature3 net:has_parent_class ?featureClass.
+   ?newFeature3 net:has_concept ?concept3.
    # Object: entity 2 
    ?newEntity2 a net:Object.
-   ?newEntity2 net:objectType sys:Entity.
+   ?newEntity2 net:objectType \"Entity\".
    ?newEntity2 net:has_node ?uw2.
-   ?newEntity2 net:entityClass ?entityClass.
-   ?newEntity2 net:concept ?subEntity2.
+   ?newEntity2 net:has_parent_class ?entityClass.
+   ?newEntity2 net:has_concept ?subEntity2.
    ?newEntity2 net:has_feature ?newFeature2.
    # Object: entity 3 
    ?newEntity3 a net:Object.
-   ?newEntity3 net:objectType sys:Entity.
+   ?newEntity3 net:objectType \"Entity\".
    ?newEntity3 net:has_node ?uw3.
-   ?newEntity3 net:entityClass ?entityClass.
-   ?newEntity3 net:concept ?subEntity3.
+   ?newEntity3 net:has_parent_class ?entityClass.
+   ?newEntity3 net:has_concept ?subEntity3.
    ?newEntity3 net:has_feature ?newFeature3.
    # Net: Entity ClassList
    ?newNet a net:Instance.
@@ -897,12 +872,13 @@ CONSTRUCT {
 WHERE {
    # net1: entity
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?req.
    ?net1 net:has_node ?uw1.
    ?net1 net:has_atom ?atomObject1.
-   ?atomObject1 net:parentClass ?entityClass.	
-   ?atomObject1 net:concept ?mainEntity.
+   ?atomObject1 net:has_parent_class ?entityClass.	
+   ?atomObject1 net:has_concept ?mainEntity.
    # condition: mod(net1, net2)
    ?uw1 unl:mod ?uw2.
    # net2: complement modList
@@ -970,29 +946,29 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 CONSTRUCT { 
    # Object: feature 2
    ?newFeature2 a net:Object.
-   ?newFeature2 net:objectType sys:Feature.
+   ?newFeature2 net:objectType \"Feature\".
    ?newFeature2 net:has_node ?uw2.
-   ?newFeature2 net:featureClass ?entityClass2.
-   ?newFeature2 net:concept ?concept2.
+   ?newFeature2 net:has_parent_class ?entityClass2.
+   ?newFeature2 net:has_concept ?concept2.
    # Object: feature 3
    ?newFeature3 a net:Object.
-   ?newFeature3 net:objectType sys:Feature.
+   ?newFeature3 net:objectType \"Feature\".
    ?newFeature3 net:has_node ?uw3.
-   ?newFeature3 net:featureClass ?entityClass2.
-   ?newFeature3 net:concept ?concept3.
+   ?newFeature3 net:has_parent_class ?entityClass2.
+   ?newFeature3 net:has_concept ?concept3.
    # Object: entity 2 
    ?newEntity2 a net:Object.
-   ?newEntity2 net:objectType sys:Entity.
+   ?newEntity2 net:objectType \"Entity\".
    ?newEntity2 net:has_node ?uw2.
-   ?newEntity2 net:entityClass ?entityClass2.
-   ?newEntity2 net:concept ?subEntity2.
+   ?newEntity2 net:has_parent_class ?entityClass2.
+   ?newEntity2 net:has_concept ?subEntity2.
    ?newEntity2 net:has_feature ?newFeature2.
    # Object: entity 3 
    ?newEntity3 a net:Object.
-   ?newEntity3 net:objectType sys:Entity.
+   ?newEntity3 net:objectType \"Entity\".
    ?newEntity3 net:has_node ?uw3.
-   ?newEntity3 net:entityClass ?entityClass2.
-   ?newEntity3 net:concept ?subEntity3.
+   ?newEntity3 net:has_parent_class ?entityClass2.
+   ?newEntity3 net:has_concept ?subEntity3.
    ?newEntity3 net:has_feature ?newFeature3.
    # Net: Entity ClassList
    ?newNet a net:Instance.
@@ -1007,12 +983,13 @@ CONSTRUCT {
 WHERE {
    # net1: agent
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?req.
    ?net1 net:has_node ?uw1.
    ?net1 net:has_atom ?atomObject1.
-   ?atomObject1 net:parentClass ?entityClass1.	
-   ?atomObject1 net:concept ?mainEntity.
+   ?atomObject1 net:has_parent_class ?entityClass1.	
+   ?atomObject1 net:has_concept ?mainEntity.
    # condition: mod(net1, net2)
    ?uw1 unl:mod ?uw2.
    # net2: entity modList
@@ -1081,16 +1058,16 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 CONSTRUCT { 
    # Object: entity 2 
    ?newEntity2 a net:Object.
-   ?newEntity2 net:objectType sys:Entity.
+   ?newEntity2 net:objectType \"Entity\".
    ?newEntity2 net:has_node ?uw2.
-   ?newEntity2 net:entityClass ?entityClass2.
-   ?newEntity2 net:concept ?subEntity2.
+   ?newEntity2 net:has_parent_class ?entityClass2.
+   ?newEntity2 net:has_concept ?subEntity2.
    # Object: entity 3 
    ?newEntity3 a net:Object.
-   ?newEntity3 net:objectType sys:Entity.
+   ?newEntity3 net:objectType \"Entity\".
    ?newEntity3 net:has_node ?uw3.
-   ?newEntity3 net:entityClass ?entityClass2.
-   ?newEntity3 net:concept ?subEntity3.
+   ?newEntity3 net:has_parent_class ?entityClass2.
+   ?newEntity3 net:has_concept ?subEntity3.
    # Net: Entity ClassList
    ?newNet a net:Instance.
    ?newNet net:type net:entity_class_list.
@@ -1103,12 +1080,13 @@ CONSTRUCT {
 WHERE {
    # net1: agent
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?req.
    ?net1 net:has_node ?uw1.
    ?net1 net:has_atom ?atomObject1.
-   ?atomObject1 net:parentClass ?entityClass1.	
-   ?atomObject1 net:concept ?mainEntity.
+   ?atomObject1 net:has_parent_class ?entityClass1.	
+   ?atomObject1 net:has_concept ?mainEntity.
    # condition: mod(net1, net2)
    ?uw1 unl:mod ?uw2.
    # net2: entity modList
@@ -1178,8 +1156,8 @@ CONSTRUCT {
 WHERE {
    # net1: entity
    ?object a net:Object.
-   ?object net:parentClass ?objectClass.	
-   ?object net:concept ?objectConcept.
+   ?object net:has_parent_class ?objectClass.	
+   ?object net:has_concept ?objectConcept.
    # URI (for classes and instance)
    fprm:System_Ontology fprm:frameURI ?frameURI.
    BIND (concat( ?frameURI, ?objectClass) AS ?s1).
@@ -1216,7 +1194,7 @@ WHERE {
    ?net1 net:type net:event.
    ?net1 net:has_structure ?req.
    ?net1 net:has_verb ?verbObject1.	
-   ?verbObject1 net:concept ?verbConcept.
+   ?verbObject1 net:has_concept ?verbConcept.
    # domain  
    ?net1 net:has_possible_domain ?possibleDomainLabel1.
 	?domainClass rdfs:label ?possibleDomainLabel1 .
@@ -1273,7 +1251,7 @@ WHERE {
    ?net1 net:type net:state_property.
    ?net1 net:has_structure ?req.
    ?net1 net:has_verb ?verbObject1.	
-   ?verbObject1 net:concept ?verbConcept.
+   ?verbObject1 net:has_concept ?verbConcept.
    # domain  
    ?net1 net:has_possible_domain ?possibleDomainLabel1.
 	?domainClass rdfs:label ?possibleDomainLabel1 .
@@ -1325,8 +1303,8 @@ CONSTRUCT {
 WHERE {
    # net1: entity
    ?object a net:Object.
-   ?object net:parentClass ?objectClass.	
-   ?object net:entityInstance ?objectInstance. 
+   ?object net:has_parent_class ?objectClass.	
+   ?object net:has_instance ?objectInstance. 
    # URI (for classes and instance)
    fprm:System_Ontology fprm:frameURI ?frameURI.
    BIND (concat( ?frameURI, ?objectClass) AS ?s1).
@@ -1355,7 +1333,7 @@ CONSTRUCT {
    ?newNet net:has_structure ?req.
    ?newNet net:has_node ?uw1.
    ?newNet net:abstractionClass ?abstractionClass.
-   ?newNet net:concept ?concept1. 
+   ?newNet net:has_concept ?concept1. 
 }
 WHERE {
    # Absraction (from System Ontology)
@@ -1392,18 +1370,19 @@ PREFIX req: <https://unsel.tetras-libre.fr/tenet/frame/requirement-ontology#>
 PREFIX sys: <https://unsel.tetras-libre.fr/tenet/frame/system-ontology/>
 PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
     
-# -- Create Entity net
+# -- Create Atom Net (entity)
 CONSTRUCT { 
    # Object: entity 
    ?newObject a net:Object.
-   ?newObject net:objectType net:atom.
-   ?newObject net:atomType ?atomType.
-   ?newObject net:node ?uw1.
-   ?newObject net:parentClass ?atomClass.
-   ?newObject net:concept ?concept1.
+   ?newObject net:objectType ?atomMother.
+   ?newObject net:has_node ?uw1.
+   ?newObject net:has_mother_class ?atomMother.
+   ?newObject net:has_parent_class ?atomClass.
+   ?newObject net:has_concept ?concept1.
    # Net: Entity
    ?newNet a net:Instance.
-   ?newNet net:type net:entity.
+   ?newNet net:type net:atom.
+   ?newNet net:atomOf ?atomMother.
    ?newNet net:has_structure ?req.
    ?newNet net:has_node ?uw1.
    ?newNet net:has_atom ?newObject.
@@ -1411,13 +1390,9 @@ CONSTRUCT {
 WHERE {
    # Atom Description (from System Ontology)
    ?targetClass rdfs:subClassOf sys:Entity.
-   ?targetClass sys:has_mother_class ?atomType.
+   ?targetClass sys:has_mother_class ?atomMother.
    ?targetClass sys:is_class ?atomClass.
    ?targetClass sys:has_restriction ?restriction.
-   # -- old --- fprm:System_Entity fprm:class ?atomType.
-   # -- old --- ?entity rdf:type fprm:System_Entity.
-   # -- old --- ?entity fprm:class ?entityClass.
-   # -- old --- ?entity fprm:restriction ?entityRestriction.
    # UW: type UW-Occurrence and substructure of req sentence
    ?uw1 rdf:type unl:UW_Occurrence.
    ?uw1 unl:is_substructure_of ?req.
@@ -1458,34 +1433,33 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 # -- Create Feature net
 CONSTRUCT { 
    # Object: atom (feature) 
-   ?newAtom a net:Object.
-   ?newAtom net:objectType net:atom.
-   ?newAtom net:atomType ?atomType.
-   ?newAtom net:node ?uw1.
-   ?newAtom net:parentClass ?featureClass.
-   ?newAtom net:concept ?concept1.
+   ?newObject a net:Object.
+   ?newObject net:objectType ?atomMother.
+   ?newObject net:has_node ?uw1.
+   ?newObject net:has_mother_class ?atomMother.
+   ?newObject net:has_parent_class ?featureClass.
+   ?newObject net:concept ?concept1.
    # Net: Feature
    ?newNet a net:Instance.
-   ?newNet net:type net:feature.
+   ?newNet net:type net:atom.
+   ?newNet net:atomOf ?atomMother.
    ?newNet net:has_structure ?req.
    ?newNet net:has_node ?uw1.
-   # -- old --- ?newNet net:featureClass ?featureClass.
-   # -- old --- ?newNet net:concept ?concept1.
-   ?newNet net:has_atom ?newAtom.
+   ?newNet net:has_atom ?newObject.
 }
 WHERE {
    # Atom Description (from System Ontology)
-   fprm:System_Feature fprm:class ?atomType.
-   ?atomDescription rdf:type fprm:System_Feature.
-   ?atomDescription fprm:class ?featureClass.
-   ?atomDescription fprm:restriction ?featureRestriction.
+   ?targetClass rdfs:subClassOf sys:Feature.
+   ?targetClass sys:has_mother_class ?atomMother.
+   ?targetClass sys:is_class ?atomClass.
+   ?targetClass sys:has_restriction ?restriction.
    # UW: type UW-Occurrence and substructure of req sentence
    ?uw1 rdf:type unl:UW_Occurrence.
    ?uw1 unl:is_substructure_of ?req.
    # ------ ?uw1 unl:is_occurrence_of ?lexTrg.
    # Filter on label
    ?uw1 rdfs:label ?uw1Label.
-   FILTER ( regex(str(?uw1Label),str(?featureRestriction))  ).
+   FILTER ( regex(str(?uw1Label),str(?restriction))  ).
    # Label: Id, concept
    ?uw1 unl:has_id ?uw1Id.
    BIND (strbefore(?uw1Label, '(') AS ?concept1).
@@ -1494,10 +1468,10 @@ WHERE {
    cprm:Config_Parameters cprm:objectRef ?objectRef.
    BIND (concat( ?netURI, ?objectRef) AS ?a1).
    BIND (concat(?a1, ?uw1Id) AS ?a2).
-   BIND (uri(?a2) AS ?newAtom).
+   BIND (uri(?a2) AS ?newObject).
    # URI (for Entity Net)
    cprm:Config_Parameters cprm:netURI ?netURI.
-   BIND (concat( ?netURI, ?featureClass, '_') AS ?n1).
+   BIND (concat( ?netURI, ?atomClass, '_') AS ?n1).
    BIND (concat(?n1, ?uw1Id) AS ?n2).
    BIND (uri(?n2) AS ?newNet).
 }""" ;
@@ -1521,9 +1495,9 @@ CONSTRUCT {
    # Object: entity 
    ?newVerb a net:Object.
    ?newVerb net:objectType sys:Verb.
-   ?newVerb net:node ?uw1.
+   ?newVerb net:has_node ?uw1.
    ?newVerb net:verbClass ?verbClass.
-   ?newVerb net:concept ?concept1.
+   ?newVerb net:has_concept ?concept1.
    # Net: Entity
    ?newNet a net:Instance.
    ?newNet net:type net:verb.
@@ -1636,7 +1610,7 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 # -- Extend a ModList net
 CONSTRUCT { 
    ?semNet net:has_node ?uw2.
-   ?semNet net:concept ?concept2.
+   ?semNet net:has_concept ?concept2.
 }
 WHERE {
    # selection: modList net
@@ -1704,7 +1678,7 @@ CONSTRUCT {
    ?semNet net:type net:mod_list.
    ?semNet net:has_structure ?req.
    ?semNet net:has_node ?uw1.
-   ?semNet net:concept ?concept1.
+   ?semNet net:has_concept ?concept1.
 }
 WHERE {
    # UW: type UW-Occurrence and substructure of req sentence
@@ -1743,17 +1717,16 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
     
 # -- Instantiate entities in class list by extension of instances (2)
 CONSTRUCT { 
-   ?subObject2 net:entityInstance ?instanceName1. 
+   ?subObject2 net:has_instance ?instanceName1. 
 }
 WHERE {
    # net1: entity with instance
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?sameReq.
    ?net1 net:has_atom ?sameObject1.
-   # -- old --- ?entityObject1 net:parentClass ?sameClass.	
-   # -- old --- ?entityObject1 net:concept ?sameEntity.
-   ?sameObject1 net:entityInstance ?instanceName1. 
+   ?sameObject1 net:has_instance ?instanceName1. 
    # net2: entity classList
    ?net2 a net:Instance.
    ?net2 net:type net:entity_class_list.
@@ -1763,7 +1736,7 @@ WHERE {
    # -- old --- ?net2 net:has_mainClass ?sameEntity.
    ?net2 net:has_subClass ?subObject2.	
    # Filter
-   FILTER NOT EXISTS { ?subObject2 net:entityInstance ?instanceName2 } .
+   FILTER NOT EXISTS { ?subObject2 net:has_instance ?instanceName2 } .
 }""" ;
   sh:order 2.7 ;
 .
@@ -1782,7 +1755,7 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
     
 # -- Instantiate entities in class list by extension of instances (2)
 CONSTRUCT { 
-   ?subObject2 net:entityInstance ?instanceName1. 
+   ?subObject2 net:has_instance ?instanceName1. 
 }
 WHERE {
    # net2: entity classList with instance
@@ -1791,18 +1764,18 @@ WHERE {
    ?net1 net:entityClass ?sameClass.
    ?net1 net:has_structure ?sameReq.
    ?net1 net:has_subClass ?entityObject1.
-   ?entityObject1 net:concept ?sameEntity.	
-   ?entityObject1 net:entityInstance ?instanceName1. 
+   ?entityObject1 net:has_concept ?sameEntity.	
+   ?entityObject1 net:has_instance ?instanceName1. 
    # net2: another entity classList
    ?net2 a net:Instance.
    ?net2 net:type net:entity_class_list.
    ?net2 net:entityClass ?sameClass.
    ?net2 net:has_structure ?sameReq.
    ?net2 net:has_mainClass ?entityObject2.
-   ?entityObject2 net:concept ?sameEntity.	
+   ?entityObject2 net:has_concept ?sameEntity.	
    ?net2 net:has_subClass ?subObject2.	
    # Filter
-   FILTER NOT EXISTS { ?subObject2 net:entityInstance ?instanceName2 } .
+   FILTER NOT EXISTS { ?subObject2 net:has_instance ?instanceName2 } .
 }""" ;
   sh:order 2.8 ;
 .
@@ -1822,12 +1795,13 @@ PREFIX fprm: <https://unsel.tetras-libre.fr/tenet/frame/parameters#>
 # -- Create Entity net
 CONSTRUCT { 
    # Object: entity 
-   ?atomObject1 net:entityInstance ?instanceName. 
+   ?atomObject1 net:has_instance ?instanceName. 
 }
 WHERE {
    # net1: entity (with entity object)
    ?net1 a net:Instance.
-   ?net1 net:type net:entity.
+   ?net1 net:type net:atom.
+   ?net1 net:atomOf sys:Entity.
    ?net1 net:has_structure ?req.
    ?net1 net:has_node ?uw1.
    ?net1 net:has_atom ?atomObject1. 
diff --git a/frame/system-ontology.ttl b/frame/system-ontology.ttl
index f39a2539dfb3152bf11388ed7197e4871e7fb580..730140b07103088695196379c9c7991f92e32960 100644
--- a/frame/system-ontology.ttl
+++ b/frame/system-ontology.ttl
@@ -30,7 +30,7 @@ sys:Entity
   rdfs:label "entity"@en ;
   rdfs:label "entité"@fr ;
   rdfs:subClassOf sys:Structure ;
-  sys:is_class "Entity" ;
+  sys:is_class "sys:Entity" ;
 .
 sys:Event
   rdf:type owl:Class ;
@@ -66,7 +66,7 @@ sys:abstract_thing
   rdfs:label "abstract thing"@en ;
   rdfs:label "élément abstrait"@fr ;
   rdfs:subClassOf sys:Abstraction ;
-  sys:has_mother_class "Abstraction" ;
+  sys:has_mother_class sys:Abstraction ;
   sys:has_restriction "icl>abstract_thing" ;
   sys:is_class "abstract_thing" ;
 .
@@ -74,7 +74,7 @@ sys:action_verb
   rdf:type owl:Class ;
   rdfs:label "action verb" ;
   rdfs:subClassOf sys:Verb ;
-  sys:has_mother_class "Verb" ;
+  sys:has_mother_class sys:Verb ;
   sys:has_restriction "icl>do" ;
   sys:is_class "action_verb" ;
 .
@@ -83,7 +83,7 @@ sys:agent
   rdfs:label "agent"@en ;
   rdfs:label "agent"@fr ;
   rdfs:subClassOf sys:Entity ;
-  sys:has_mother_class "Entity" ;
+  sys:has_mother_class sys:Entity ;
   sys:has_restriction "icl>administrator" ;
   sys:has_restriction "icl>operator" ;
   sys:has_restriction "icl>person" ;
@@ -93,7 +93,7 @@ sys:attributive_verb
   rdf:type owl:Class ;
   rdfs:label "attributive verb" ;
   rdfs:subClassOf sys:Verb ;
-  sys:has_mother_class "Verb" ;
+  sys:has_mother_class sys:Verb ;
   sys:has_restriction "icl>be" ;
   sys:is_class "attributive_verb" ;
 .
@@ -106,7 +106,7 @@ sys:component
   rdfs:label "component"@en ;
   rdfs:label "composant"@fr ;
   rdfs:subClassOf sys:Entity ;
-  sys:has_mother_class "Entity" ;
+  sys:has_mother_class sys:Entity ;
   sys:has_restriction "icl>device" ;
   sys:has_restriction "icl>electronic_device" ;
   sys:has_restriction "icl>instrumentality" ;
@@ -153,6 +153,7 @@ sys:has_frame_base_uri
 sys:has_mother_class
   rdf:type rdf:Property ;
   rdfs:label "has mother class" ;
+  rdfs:range owl:Thing ;
   rdfs:subPropertyOf sys:seedProperty ;
   sys:has_mother_class "Entity" ;
   sys:has_restriction "icl>administrator" ;
@@ -194,7 +195,7 @@ sys:message
   rdfs:label "message"@en ;
   rdfs:label "message"@fr ;
   rdfs:subClassOf sys:Entity ;
-  sys:has_mother_class "Entity" ;
+  sys:has_mother_class sys:Entity ;
   sys:has_restriction "icl>assignment" ;
   sys:has_restriction "icl>communication" ;
   sys:is_class "message" ;
@@ -208,7 +209,7 @@ sys:place
   rdfs:label "lieu"@fr ;
   rdfs:label "place"@en ;
   rdfs:subClassOf sys:Feature ;
-  sys:has_mother_class "Feature" ;
+  sys:has_mother_class sys:Feature ;
   sys:has_restriction "icl>air_base_installation" ;
   sys:has_restriction "icl>place" ;
   sys:is_class "place" ;