code: def _build_class_labels(self):
      return {"contradiction": 0, "neutral": 1, "entailment": 2}
  
file_path: lavis/lavis/datasets/datasets/snli_ve_datasets.py
imports: import os
  from collections import OrderedDict
  from lavis.datasets.datasets.multimodal_classification_datasets import MultimodalClassificationDataset
  from PIL import Image
label_desc: Use image node_id 2 for calling the SNLIVisualEntialmentDataset obj's underlying member method code with example usage: obj._build_class_labels() and returns: dict