这意味着凶手可能是一个陌生人。
法院调查表明，被砍死的医生并未接诊过凶手。[{'character': '法', 'pinyin': 'fa3', 'highest pitch': 8.98, 'lowest pitch': 7.64, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '院', 'pinyin': 'van4', 'highest pitch': 10.17, 'lowest pitch': 8.41, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '调', 'pinyin': 'diao4', 'highest pitch': 10.52, 'lowest pitch': 8.9, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '查', 'pinyin': 'cha2', 'highest pitch': 9.85, 'lowest pitch': 8.58, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '表', 'pinyin': 'biao3', 'highest pitch': 9.85, 'lowest pitch': 4.97, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '明', 'pinyin': 'ming2', 'highest pitch': 8.27, 'lowest pitch': 4.97, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.18}, {'character': '被', 'pinyin': 'bei4', 'highest pitch': 9.89, 'lowest pitch': 8.68, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '砍', 'pinyin': 'kan2', 'highest pitch': 10.54, 'lowest pitch': 7.64, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '死', 'pinyin': 'sii3', 'highest pitch': 10.54, 'lowest pitch': 5.86, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.27, 'lowest pitch': 5.52, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '医', 'pinyin': 'i1', 'highest pitch': 7.73, 'lowest pitch': 6.27, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '生', 'pinyin': 'sheng1', 'highest pitch': 9.03, 'lowest pitch': 8.22, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '并', 'pinyin': 'bing4', 'highest pitch': 10.86, 'lowest pitch': 9.49, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '未', 'pinyin': 'uei4', 'highest pitch': 9.49, 'lowest pitch': 6.6, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '接', 'pinyin': 'jie1', 'highest pitch': 8.13, 'lowest pitch': 7.52, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '诊', 'pinyin': 'zhen3', 'highest pitch': 7.52, 'lowest pitch': 4.62, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo5', 'highest pitch': 6.38, 'lowest pitch': 4.63, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '凶', 'pinyin': 'xiong1', 'highest pitch': 8.44, 'lowest pitch': 7.91, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '手', 'pinyin': 'shou3', 'highest pitch': 8.23, 'lowest pitch': 4.17, 'duration': 0.32, 'prosody hierarchy': '#4'}]