Returns  an list of tuples of the form (word, POS tag), using transfer POS tagger

def transfer_pos_tags(self):
    """Returns  an list of tuples of the form (word, POS tag), using transfer POS tagger"""
    tagged_words = []
    for word,t in self.transfer_pos_tagger.annotate(self.words):
      word.pos_tag = t
      tagged_words.append((word, t))
    return tagged_words