old_contents: # encoding: utf8
  from __future__ import unicode_literals
  
  from ..symbols import *
  
  
  PRON_LEMMA = "-PRON-"
  
  
  def update_exc(exc, additions):
      overlap = set(exc.keys()).intersection(set(additions))
      assert not overlap, overlap
      exc.update(additions)
  
  
  def strings_to_exc(orths):
      return {orth: [{ORTH: orth}] for orth in orths}
  
  
  def expand_exc(excs, search, replace):
      updates = {}
  
      for token_string, tokens in excs.items():
          if search in token_string:
              new_key = token_string.replace(search, replace)
              new_value = [_fix_token(t, search, replace) for t in tokens]
  
              updates[new_key] = new_value
  
      return updates
  
  
  def _fix_token(token, search, replace):
      fixed = dict(token)
      fixed[ORTH] = fixed[ORTH].replace(search, replace)
      return fixed
  
new_contents: # encoding: utf8
  from __future__ import unicode_literals
  
  from ..symbols import *
  
  
  PRON_LEMMA = "-PRON-"
  ENT_ID = "ent_id"
  
  
  def update_exc(exc, additions):
      overlap = set(exc.keys()).intersection(set(additions))
      assert not overlap, overlap
      exc.update(additions)
  
  
  def strings_to_exc(orths):
      return {orth: [{ORTH: orth}] for orth in orths}
  
  
  def expand_exc(excs, search, replace):
      updates = {}
  
      for token_string, tokens in excs.items():
          if search in token_string:
              new_key = token_string.replace(search, replace)
              new_value = [_fix_token(t, search, replace) for t in tokens]
  
              updates[new_key] = new_value
  
      return updates
  
  
  def _fix_token(token, search, replace):
      fixed = dict(token)
      fixed[ORTH] = fixed[ORTH].replace(search, replace)
      return fixed
  
subject: Add ENT_ID constant