class_docstr: A silly task for debugging the infrastructure where the input is a random
  sequence of tokens and the output is one of those tokens.
  
  Example:
  
      2 5 3 -> 2
      1 4 0 -> 0
class_docstr_tok: ["A","silly","task","for","debugging","the","infrastructure","where","the","input","is","a","random","sequence","of","tokens","and","the","output","is","one","of","those","tokens",".","Example",":","2","5","3","-",">","2","1","4","0","-",">","0"]
code: def __init__(
      self,
      num_input_tokens: int,
      vocab_size: int,
      num_train_instances: int,
      num_test_instances: int,
  ):
      super().__init__()
      self.num_input_tokens = num_input_tokens
      self.vocab_size = vocab_size
      self.num_train_instances = num_train_instances
      self.num_test_instances = num_test_instances
  
imports: import random
  from typing import List
  from .scenario import Scenario, Instance, Reference, TRAIN_SPLIT, TEST_SPLIT, CORRECT_TAG, Input, Output
label_desc: Use image node_id 1 to create a new Simple1Scenario object from inherited base classes: Scenario with example: obj = Simple1Scenario(num_input_tokens, vocab_size, num_train_instances, num_test_instances)