code: def __getitem__(self, index):
      data = super().__getitem__(index)
      if data != None:
          data["answer"] = data["answers"]  # needed to use gqa task
          data["text_output"] = data["answers"]
      return data
  
file_path: lavis/lavis/datasets/datasets/music_avqa.py
imports: import torch
  import copy
  import os
  import random
  import json
  import ast
  from PIL import Image
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 1 for calling the MusicAVQAInstructDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: data