code: def __init__(self, opt, shared=None):
      opt = copy.deepcopy(opt)
      data_path = _path(opt)
      opt["datafile"] = data_path
      self.id = "SNLI"
      self.dialog_format = opt.get("dialog_format", False)
      self.binary_classes = opt.get("binary_classes", False)
      super().__init__(opt, shared)
  
file_path: ParlAI/parlai/tasks/snli/agents.py
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  import copy
  import os
  from parlai.core.teachers import DialogTeacher
  from parlai.tasks.multinli.agents import setup_data, BICLASS_LABELS, MULTINLI_LABELS
  from .build import build
label_desc: Use image node_id 2 to create a new DefaultTeacher object from inherited base classes: DialogTeacher with example: obj = DefaultTeacher(opt, shared)