{"subtask_index": 0, "subtask": "Abnormal"}
{"subtask_index": 1, "subtask": "End"}
{"subtask_index": 2, "subtask": "Close the book"}
{"subtask_index": 3, "subtask": "Close the open book"}
{"subtask_index": 4, "subtask": "abnormal"}
{"subtask_index": 5, "subtask": "null"}