class_docstr: Transform the question
  
  Example::
  
      origin: Where was Super Bowl 50 held?
      transform: Where did Super Bowl 50 take place?
docstr: Paraphrase the question with BackTrans or MLM
  :param sample: the sample to transform
  :param kwargs:
  :return: list of sample
docstr_tok: ["Paraphrase","the","question","with","BackTrans","or","MLM",":","param","sample",":","the","sample","to","transform",":","param","kwargs",":",":","return",":","list","of","sample"]
code: def _transform(self, sample, **kwargs):
      r"""
      Paraphrase the question with BackTrans or MLM
      :param sample: the sample to transform
      :param kwargs:
      :return: list of sample
      """
  
      transform_samples = []
      new_sample = self.tranf.transform(
          sample=sample, field="question", n=1
      )
      transform_samples.extend(new_sample)
      return transform_samples
  
imports: from ..transformation import Transformation
  from ...transformation.UT import BackTrans, MLMSuggestion
label_desc: Use image node_id 3 for calling the PerturbQuestion obj's underlying member method code with example usage: obj._transform(sample) and returns: transform_samples