code: def __read_data(data_file):
      text = open(data_file).read()
      sentences = text.split("\n")
      sentences = [
          WordTokenizeCorpusReader.__extract_tokens(s)
          for s in sentences
      ]
      return sentences
  
file_path: underthesea/examples/pos_tag/data.py
imports: from os.path import join
label_desc: Use image node_id 2 for calling the WordTokenizeCorpusReader obj's underlying member method code with example usage: obj.__read_data(data_file) and returns: sentences