是谁留下的印痕？
谁都知道，那是他握扫帚留下的印痕。[{'character': '谁', 'pinyin': 'shuei2', 'highest pitch': 9.45, 'lowest pitch': 8.28, 'duration': 0.3, 'prosody hierarchy': 'null'}, {'character': '都', 'pinyin': 'dou1', 'highest pitch': 11.46, 'lowest pitch': 8.98, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '知', 'pinyin': 'zhiii1', 'highest pitch': 11.11, 'lowest pitch': 7.44, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '道', 'pinyin': 'dao4', 'highest pitch': 8.8, 'lowest pitch': 6.58, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.28}, {'character': '那', 'pinyin': 'na4', 'highest pitch': 8.69, 'lowest pitch': 7.35, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 7.73, 'lowest pitch': 6.71, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '他', 'pinyin': 'ta1', 'highest pitch': 8.88, 'lowest pitch': 6.71, 'duration': 0.29, 'prosody hierarchy': '#1'}, {'character': '握', 'pinyin': 'uo4', 'highest pitch': 9.77, 'lowest pitch': 8.5, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '扫', 'pinyin': 'sao4', 'highest pitch': 11.3, 'lowest pitch': 7.8, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '帚', 'pinyin': 'zhou5', 'highest pitch': 7.96, 'lowest pitch': 5.82, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '留', 'pinyin': 'liou2', 'highest pitch': 6.77, 'lowest pitch': 6.43, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '下', 'pinyin': 'xia4', 'highest pitch': 9.03, 'lowest pitch': 5.86, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.87, 'lowest pitch': 5.86, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '印', 'pinyin': 'in4', 'highest pitch': 8.46, 'lowest pitch': 6.76, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '痕', 'pinyin': 'hen2', 'highest pitch': 7.21, 'lowest pitch': 5.74, 'duration': 0.34, 'prosody hierarchy': '#4'}]