code: def add_cmdline_args(
      cls, parser: ParlaiParser, partial_opt: Optional[Opt] = None
  ) -> ParlaiParser:
      parser = super().add_cmdline_args(parser, partial_opt)
      group = parser.add_argument_group(
          "PremiseHypothesisQuestionAnswer args"
      )
      group.add_argument(
          "--premise-token",
          default="PREMISE: ",
          type=str,
      )
      group.add_argument(
          "--hypothesis-token",
          default="HYPOTHESIS: ",
          type=str,
      )
      return parser
  
file_path: ParlAI/parlai/tasks/reasoning/question_answer.py
imports: from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from typing import Dict, Optional, Tuple
  from parlai.tasks.reasoning.base import t_QUESTION, t_ANSWER_PREFIX_TOKEN, t_ANSWER, AbstractQuestionAnswer
label_desc: Use image node_id 1 for calling the PremiseHypothesisQuestionAnswer obj's underlying member method code with example usage: obj.add_cmdline_args(cls, parser, partial_opt) and returns: parser