class_docstr: Generate a distractor before the sentence with answer.
  
  Example::
  
      origin question: Which NFL team represented the AFC at Super Bowl 50?
      transform distarctor: The UNICEF team of Kew Gardens represented
          the UNICEF at Champ Bowl 40.
code: def __repr__(self):
      return "AddSentenceDiverse"
  
file_path: textflint/textflint/generation/transformation/MRC/add_sent_diverse.py
imports: import collections
  from ..transformation import Transformation
  from ....common.utils import FlintError
  from ....input.component.sample.mrc_sample import MRCSample, ConstituencyParse
label_desc: Use image node_id 2 for calling the AddSentDiverse obj's underlying member method code with example usage: obj.__repr__() and returns: str