我们为什么要养老院里的老人？
一则可以照顾无儿无女的老人，二则可增加收入。[{'character': '一', 'pinyin': 'i1', 'highest pitch': 11.2, 'lowest pitch': 9.89, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '则', 'pinyin': 'ze2', 'highest pitch': 8.98, 'lowest pitch': 7.89, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '可', 'pinyin': 'ke2', 'highest pitch': 9.68, 'lowest pitch': 9.34, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '以', 'pinyin': 'i3', 'highest pitch': 9.34, 'lowest pitch': 6.58, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '照', 'pinyin': 'zhao4', 'highest pitch': 9.45, 'lowest pitch': 6.58, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '顾', 'pinyin': 'gu5', 'highest pitch': 7.92, 'lowest pitch': 7.21, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '无', 'pinyin': 'u2', 'highest pitch': 10.33, 'lowest pitch': 7.0, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '儿', 'pinyin': 'er2', 'highest pitch': 9.29, 'lowest pitch': 8.6, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '无', 'pinyin': 'u2', 'highest pitch': 10.33, 'lowest pitch': 8.13, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '女', 'pinyin': 'nv3', 'highest pitch': 10.24, 'lowest pitch': 5.52, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.96, 'lowest pitch': 5.52, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '老', 'pinyin': 'lao3', 'highest pitch': 8.57, 'lowest pitch': 4.47, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.22, 'lowest pitch': 4.47, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.22}, {'character': '二', 'pinyin': 'er4', 'highest pitch': 8.87, 'lowest pitch': 6.97, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '则', 'pinyin': 'ze2', 'highest pitch': 8.98, 'lowest pitch': 6.63, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '可', 'pinyin': 'ke3', 'highest pitch': 14.0, 'lowest pitch': 8.42, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '增', 'pinyin': 'zeng1', 'highest pitch': 8.56, 'lowest pitch': 8.11, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '加', 'pinyin': 'jia1', 'highest pitch': 9.44, 'lowest pitch': 8.45, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '收', 'pinyin': 'shou1', 'highest pitch': 10.23, 'lowest pitch': 9.06, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '入', 'pinyin': 'ru4', 'highest pitch': 10.01, 'lowest pitch': 6.39, 'duration': 0.26, 'prosody hierarchy': '#4'}]