code: def _preprocess_answer(self, sample_info):
      sample_info["answers"] = [
          self.vg_answer_preprocessor(
              {"text": sample_info["answers"][0]},
              remove=["?", ",", ".", "a", "an", "the"],
          )["text"]
      ]
  
      return sample_info
  
file_path: mmf/mmf/datasets/builders/visual_genome/masked_dataset.py
imports: from mmf.common.sample import Sample
  from mmf.datasets.mmf_dataset import MMFDataset
label_desc: Use image node_id 3 for calling the MaskedVisualGenomeDataset obj's underlying member method code with example usage: obj._preprocess_answer(sample_info) and returns: sample_info