路上发生了什么事情？
街上空留下了神色匆匆的行人。[{'character': '街', 'pinyin': 'jie1', 'highest pitch': 9.54, 'lowest pitch': 8.97, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '上', 'pinyin': 'shang4', 'highest pitch': 10.11, 'lowest pitch': 7.77, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'character': '空', 'pinyin': 'kong1', 'highest pitch': 9.9, 'lowest pitch': 7.94, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '留', 'pinyin': 'liou2', 'highest pitch': 9.56, 'lowest pitch': 6.58, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '下', 'pinyin': 'xia4', 'highest pitch': 8.98, 'lowest pitch': 7.17, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 7.35, 'lowest pitch': 6.77, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '神', 'pinyin': 'shen2', 'highest pitch': 7.36, 'lowest pitch': 6.19, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '色', 'pinyin': 'se4', 'highest pitch': 8.96, 'lowest pitch': 6.87, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '匆', 'pinyin': 'cong1', 'highest pitch': 9.84, 'lowest pitch': 7.28, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '匆', 'pinyin': 'cong1', 'highest pitch': 9.84, 'lowest pitch': 9.08, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 9.44, 'lowest pitch': 8.34, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '行', 'pinyin': 'xing2', 'highest pitch': 9.13, 'lowest pitch': 5.61, 'duration': 0.29, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.07, 'lowest pitch': 4.44, 'duration': 0.3, 'prosody hierarchy': '#4'}]