old_contents: import nltk
  
  class PosExtractor(object):
  
      def __init__(self, debug = False):
          pass
          
      
      def extract_entities(self, token_sent, np_bounds, rel_bounds):
          pass
  
  
new_contents: import nltk
  
  class PosExtractor(object):
  
      def __init__(self, debug = False):
          pass
          
      
      def extract_relationships(self, token_sent, np_bounds, rel_bounds):
          """ Extract relationships based upon entity's found in Noun Phrases and 
              Relational Phrases - A simple approach - if we find Relational Phrases
              that are surrounded by Noun Phrases, then we'll call this a relationship
          """
          
          pass
  
  
      
  
subject: update relation extractor wording and comments