old_contents: from collections import defaultdict
  
  
  class EntityForm:
      def __init__(self):
          self._score = 0.
          self.forms = defaultdict(float)
  
      def add_form(self, score, normal_form):
          self._score += score
          self.forms[normal_form] += score
  
      def normal_form(self):
          return max(self.forms.items(), key=lambda x: x[1])[0]
  
      def score(self):
          return self._score
  
  
  class NamedObject:
      def __init__(self):
          self._entities = []
  
      def __bool__(self):
          return bool(self._entities)
  
      def add(self, object_type, score, normal_form):
          self._entities.append((object_type, score, normal_form))
  
      def calc_entities(self):
          forms = defaultdict(EntityForm)
          forms['object'] = self._make_global_entity()
          for object_type, score, normal_form in self._entities:
              forms[object_type].add_form(score, normal_form)
  
          return forms
  
      def _make_global_entity(self):
          global_form = EntityForm()
          for _, score, form in self._entities:
              global_form.add_form(score, form)
          return global_form
  
  
  
  
new_contents: from collections import defaultdict
  
  
  class EntityForm:
      def __init__(self):
          self._score = 0.
          self.forms = defaultdict(float)
  
      def add_form(self, score, normal_form):
          self._score += score
          self.forms[normal_form] += score
  
      def normal_form(self):
          return max(self.forms.items(), key=lambda x: x[1])[0]
  
      def score(self):
          return self._score
  
  
  class NamedObject:
      def __init__(self):
          self._entities = []
  
      def __bool__(self):
          return bool(self._entities)
  
      def add(self, object_type, score, normal_form):
          self._entities.append((object_type, score, normal_form))
  
      def calc_entities(self):
          forms = defaultdict(EntityForm)
          for object_type, score, normal_form in self._entities:
              forms[object_type].add_form(score, normal_form)
  
          return forms
  
subject: Remove `objects' group as useless