"那么，乌鸦到底是怎么死的呢？"
乌鸦的死是自己造成的，原因只在于他没有作调查试探活动。[{'character': '乌', 'pinyin': 'u1', 'highest pitch': 10.58, 'lowest pitch': 9.65, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '鸦', 'pinyin': 'ia1', 'highest pitch': 10.85, 'lowest pitch': 10.48, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 10.81, 'lowest pitch': 9.63, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '死', 'pinyin': 'sii3', 'highest pitch': 9.63, 'lowest pitch': 5.9, 'duration': 0.35, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 9.92, 'lowest pitch': 8.61, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '自', 'pinyin': 'zii4', 'highest pitch': 12.15, 'lowest pitch': 8.61, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '己', 'pinyin': 'ji3', 'highest pitch': 11.14, 'lowest pitch': 6.14, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '造', 'pinyin': 'zao4', 'highest pitch': 7.53, 'lowest pitch': 7.06, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '成', 'pinyin': 'cheng2', 'highest pitch': 7.08, 'lowest pitch': 5.64, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 10.81, 'lowest pitch': 6.74, 'duration': 0.18, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.35}, {'character': '原', 'pinyin': 'van2', 'highest pitch': 8.09, 'lowest pitch': 6.68, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '因', 'pinyin': 'in1', 'highest pitch': 8.68, 'lowest pitch': 8.09, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '只', 'pinyin': 'zhiii3', 'highest pitch': 8.09, 'lowest pitch': 6.16, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 7.73, 'lowest pitch': 6.16, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '于', 'pinyin': 'v2', 'highest pitch': 6.93, 'lowest pitch': 5.93, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '他', 'pinyin': 'ta1', 'highest pitch': 9.83, 'lowest pitch': 8.98, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '没', 'pinyin': 'mei2', 'highest pitch': 8.98, 'lowest pitch': 7.54, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 11.08, 'lowest pitch': 7.61, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '作', 'pinyin': 'zuo4', 'highest pitch': 8.84, 'lowest pitch': 7.6, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '调', 'pinyin': 'diao4', 'highest pitch': 9.03, 'lowest pitch': 7.33, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '查', 'pinyin': 'cha2', 'highest pitch': 7.53, 'lowest pitch': 6.08, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '试', 'pinyin': 'shiii4', 'highest pitch': 9.92, 'lowest pitch': 7.53, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '探', 'pinyin': 'tan4', 'highest pitch': 9.14, 'lowest pitch': 6.52, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '活', 'pinyin': 'huo2', 'highest pitch': 6.37, 'lowest pitch': 5.77, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '动', 'pinyin': 'dong4', 'highest pitch': 7.98, 'lowest pitch': 4.95, 'duration': 0.24, 'prosody hierarchy': '#4'}]