code: def make_input_from_plain_string(sentence_id: SentenceId, string: str) -> TranslatorInput:
      
      return TranslatorInput(sentence_id, tokens=list(data_io.get_tokens(string)), factors=None)
docs: Returns a TranslatorInput object from a plain string.
  
      :param sentence_id: Sentence id.
      :param string: An input string.
      :return: A TranslatorInput.