code: def __getitem__(self, index):
      return self.sentences[index]
  
imports: from os.path import dirname, join, exists
  from torch.utils.data import Dataset
  from underthesea import pos_tag
  from underthesea import dependency_parse
  from underthesea.utils.col_analyzer import UDAnalyzer
label_desc: Use image node_id 4 for calling the UDDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self