add imports and requirements for multiprocessing

requirements.txt

 rdflib
 sparqlwrapper
 lxml
+multiprocessing-logging

tenet/main.py

@@ -12,6 +12,8 @@ import shutil
 from rdflib import Graph
 import logging
 import logging.config
+import multiprocessing-logging
+from multiprocessing import Pool
 
 from extraction import config, structure, process
 from utility.timer import timed