@staticmethod<EOL><INDENT>def _get_answer_spans(answer_list, answer_start_list):<DEDENT>
return [(answer_start_list[i], answer_start_list[i] + len(answer))<EOL>for i, answer in enumerate(answer_list)]<EOL>
Find all answer spans from the context, returning start_index and end_index

        :param list[str] answer_list: List of all answers
        :param list[int] answer_start_list: List of all answers' start indices

        Returns
        -------
        List[Tuple]
            list of Tuple(answer_start_index answer_end_index) per question