code: def unformat_text(text):
      for punc in PUNCTUATION_LST:
          text = text.replace(punc[0], punc[1])
  
      return text
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.message import Message
  from parlai.core.teachers import FixedDialogTeacher
  from parlai.tasks.light_dialog.agents import DefaultTeacher
  from parlai.tasks.light_genderation_bias.build import build
  from parlai.utils.io import PathManager
  from collections import deque
  from copy import deepcopy
  import csv
  import json
  import os
  import random
label_desc: Use image node_id 4 for calling a global function with example usage: unformat_text(text) and returns: text