code: def normalize_trivia_qa(answer):
      """Normalization used in official TriviaQA evaluation script."""
      return _normalize_answer(
          answer, punc_chars=string.punctuation + "‘’´`_", punc_repl=" "
      ).strip()
  
file_path: text-to-text-transfer-transformer/t5/evaluation/qa_utils.py
imports: import collections
  import re
  import string
  from absl import logging
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: normalize_trivia_qa(answer) and returns: _normalize_answer