{"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."}