[ { "voice": [ "duration/task_recog/duration_single_018.wav" ], "conversations": [ { "from": "human", "value": "Please assess the duration of the audio. Is it longer than 2.4 seconds? Only reply 'A' if longer than 2.4 seconds, 'B' if 2.4 seconds or shorter. Only answer 'A' or 'B'. Do not add any explanation, punctuation, or extra text.