code: def _generate_examples(self, data_file):
      
      with tf.io.gfile.GFile(data_file) as f:
        reader = csv.DictReader(f, delimiter='\t', quoting=csv.QUOTE_NONE)
        for row in reader:
          # Everything in the row except for 'talk_name' will be a translation.
          # Missing/incomplete translations will contain the string "__NULL__" or
          # "_ _ NULL _ _".
          yield {
              'translations': {
                  lang: text
                  for lang, text in six.iteritems(row)
                  if lang != 'talk_name' and _is_translation_complete(text)
              },
              'talk_name': row['talk_name']
          }
docs: This function returns the examples in the raw (text) form.