code: def __getitem__(self, idx):
      sent = self.data[str(idx)]["idx"]
      if self.transform is not None:
          sent = self.transform(sent)
      return sent, self.data[str(idx)]["length"]
  
imports: import io
  import json
  import os
  import pickle
  from collections import Counter, OrderedDict
  from collections import defaultdict
  import numpy
  import torch
  import torch.nn
  from nltk.tokenize import sent_tokenize, word_tokenize
  from torch.utils.data import Dataset
  from torchvision import transforms, models, datasets
label_desc: Use image node_id 3 for calling the CUBSentences obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: sent,  self