class_docstr: Wrapper Teacher over SQuAD to get only the passage, and ignore the question.
class_docstr_tok: ["Wrapper","Teacher","over","SQuAD","to","get","only","the","passage",",","and","ignore","the","question","."]
code: def __init__(self, opt: Opt, shared=None):
      super().__init__(opt, shared)
  
imports: import copy
  import json
  import os
  from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.message import Message
  from parlai.core.opt import Opt
  from parlai.core.teachers import FixedDialogTeacher, DialogTeacher, ParlAIDialogTeacher
  from parlai.tasks.wrapper.agents import AbstractWrapperTeacher
  from parlai.utils.io import PathManager
  from .build import build
label_desc: Use image node_id 2 to create a new SquadQATeacher object from inherited base classes: AbstractWrapperTeacher with example: obj = SquadQATeacher(opt, shared)