code: def _compare_title(self, other):
          
  
          # If title is omitted, assume a match
          if not self.title or not other.title:
              return True
  
          titles = set(self.title_list + other.title_list)
  
          return not (titles & MALE_TITLES and titles & FEMALE_TITLES)
docs: Return False if titles have different gender associations