你为什么问这个问题？
姑姑，你的胸为什么这么小？[{'character': '姑', 'pinyin': 'gu1', 'highest pitch': 10.56, 'lowest pitch': 9.25, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '姑', 'pinyin': 'gu5', 'highest pitch': 9.98, 'lowest pitch': 8.07, 'duration': 0.31, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.16}, {'character': '你', 'pinyin': 'ni3', 'highest pitch': 7.95, 'lowest pitch': 5.5, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.42, 'lowest pitch': 6.24, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '胸', 'pinyin': 'xiong1', 'highest pitch': 9.89, 'lowest pitch': 6.42, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '为', 'pinyin': 'uei4', 'highest pitch': 10.25, 'lowest pitch': 9.17, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '什', 'pinyin': 'shen2', 'highest pitch': 9.17, 'lowest pitch': 6.52, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '么', 'pinyin': 'me5', 'highest pitch': 10.85, 'lowest pitch': 6.62, 'duration': 0.1, 'prosody hierarchy': '#1'}, {'character': '这', 'pinyin': 'zhe4', 'highest pitch': 11.14, 'lowest pitch': 7.53, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '么', 'pinyin': 'me5', 'highest pitch': 10.85, 'lowest pitch': 8.02, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '小', 'pinyin': 'xiao3', 'highest pitch': 8.02, 'lowest pitch': 4.0, 'duration': 0.37, 'prosody hierarchy': '#4'}]