奶奶为什么还没有走？
奶奶还留在现场。[{'character': '奶', 'pinyin': 'nai3', 'highest pitch': 8.41, 'lowest pitch': 6.39, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '奶', 'pinyin': 'nai5', 'highest pitch': 10.87, 'lowest pitch': 6.39, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '还', 'pinyin': 'hai2', 'highest pitch': 10.85, 'lowest pitch': 7.55, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '留', 'pinyin': 'liou2', 'highest pitch': 8.15, 'lowest pitch': 7.08, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 9.28, 'lowest pitch': 7.87, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 9.3, 'lowest pitch': 7.79, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '场', 'pinyin': 'chang3', 'highest pitch': 7.79, 'lowest pitch': 3.29, 'duration': 0.33, 'prosody hierarchy': '#4'}]