code: def normalize_answer(s):
      s = s.lower()
      s = re_punc.sub(" ", s)
      s = re_art.sub(" ", s)
      s = " ".join(s.split())
      return s
  
imports: from typing import Any
  import jieba
  from rouge_chinese import Rouge
  import rouge
  import re
  from copy import deepcopy
  from collections import defaultdict
label_desc: Use image node_id 1 for calling a global function with example usage: normalize_answer(s) and returns: s