Remove need from as_property info.

Probably this can be improved upon if the data is later
analyzed with it's similars.

naive-nlu/tree_nlu/knowledge_base.py

@@ -49,6 +49,7 @@ class KnowledgeBase(object):
 
 
     def process(self, row):
+        row = row.lower()
         knowledge_before = copy.deepcopy(self.knowledge)
         logging.info("\x1b[7;32m> {} \x1b[0m".format(row))
         tokens = parsing.to_tokens(row)