code: def extract_subjects(bill):
      
      logger.debug("Extracting Subjects")
      subject_map = []
      subjects = bill.get('subjects', [])
      bill_id = bill.get('bill_id', None)
      bill_type = bill.get('bill_type', None)
  
      for sub in subjects:
          subject_map.append((bill_id, bill_type, sub))
  
      logger.debug("End Extractioning Subjects")
  
      return subject_map
docs: Return a list subject for legislation.