code: def _load_data_conll_format(filename):
      print("Read from file: ", filename)
      with open(filename, "rb") as fin:
          sentences = []
          sentence = []
          for line in fin.readlines():
              line = line.strip()
              # print line
              if len(line) == 0:
                  sentences.append(sentence)
                  sentence = []
                  continue
              tokens = line.split("\t")
              word = tokens[1]
              tag = tokens[4]
              sentence.append((word, tag))
          return sentences
  
imports: import logging
  import pickle
  import random
  from collections import defaultdict
  from nltk import jsontags
  from nltk.data import find, load
  from nltk.tag.api import TaggerI
label_desc: Use image node_id 2 for calling a global function with example usage: _load_data_conll_format(filename) and returns: sentences