class_docstr: Adds the checked sentence to the end of the text.
  
  But with probability p, it picks a wrong one. It adds the round(p*10) to the input
  as conditioning.
class_docstr_tok: ["Adds","the","checked","sentence","to","the","end","of","the","text",".","But","with","probability","p",",","it","picks","a","wrong","one",".","It","adds","the","round","(","p","*","10",")","to","the","input","as","conditioning","."]
code: def checked_sentence_kword(self):
      return "checked_sentence"
  
imports: import random
  import os
  from typing import Optional, Tuple
  from tqdm import tqdm
  from collections import defaultdict
  import json
  from parlai.core.message import Message
  from parlai.core.metrics import F1Metric
  from parlai.core.mutators import register_mutator, MessageMutator
  from parlai.tasks.wizard_of_wikipedia.agents import GeneratorTeacher
  from parlai.tasks.wizard_of_wikipedia.agents import TOKEN_KNOWLEDGE, TOKEN_END_KNOWLEDGE
label_desc: Use image node_id 2 for calling the AddCheckedSentence obj's underlying member method code with example usage: obj.checked_sentence_kword() and returns: str