class_docstr: Squad with question and context concatenated, multi-lingual vocabulary.
class_docstr_tok: ["Squad","with","question","and","context","concatenated",",","multi-lingual","vocabulary","."]
code: def dataset_filename(self):
      return "squad"
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import json
  import os
  from tensor2tensor.data_generators import generator_utils
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_problems
  from tensor2tensor.data_generators import wiki_lm
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the SquadConcatSharedVocab obj's underlying member method code with example usage: obj.dataset_filename() and returns: str