code: def _build_class_labels(self):
      return {"wrong": 0, "correct": 1}
  
imports: import os
  import random
  from lavis.datasets.datasets.base_dataset import BaseDataset
  from lavis.datasets.datasets.multimodal_classification_datasets import MultimodalClassificationDataset
  from lavis.datasets.datasets.caption_datasets import CaptionDataset
label_desc: Use image node_id 2 for calling the ViolinVideoEntailmentDataset obj's underlying member method code with example usage: obj._build_class_labels() and returns: dict