text: 
  
  def read_conll(path):
      """
      Returns list of sentences. Sentence is a list of pairs (word, NE-label)
      """
      data = open(path).read().split('\n\n')[1:]
      data = list(map(str.splitlines, data))
      get_token_and_ne = lambda s: (s.split()[0], s.split()[-1])
      data = list(map(lambda sent: list(map(get_token_and_ne, sent)), data))
      return data
  