你为什么要这么做？
张某很恼火，就预谋杀妻并骗取高额保险金。[{'character': '张', 'pinyin': 'zhang1', 'highest pitch': 11.0, 'lowest pitch': 10.54, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '某', 'pinyin': 'mou2', 'highest pitch': 10.67, 'lowest pitch': 7.61, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '很', 'pinyin': 'hen3', 'highest pitch': 10.22, 'lowest pitch': 5.92, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '恼', 'pinyin': 'nao2', 'highest pitch': 10.8, 'lowest pitch': 5.71, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '火', 'pinyin': 'huo3', 'highest pitch': 10.8, 'lowest pitch': 4.2, 'duration': 0.38, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.26}, {'character': '就', 'pinyin': 'jiou4', 'highest pitch': 9.28, 'lowest pitch': 7.89, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '预', 'pinyin': 'v4', 'highest pitch': 8.99, 'lowest pitch': 7.69, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '谋', 'pinyin': 'mou2', 'highest pitch': 10.67, 'lowest pitch': 6.45, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '杀', 'pinyin': 'sha1', 'highest pitch': 9.19, 'lowest pitch': 7.82, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '妻', 'pinyin': 'qi1', 'highest pitch': 9.14, 'lowest pitch': 8.65, 'duration': 0.34, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.08}, {'character': '并', 'pinyin': 'bing4', 'highest pitch': 8.91, 'lowest pitch': 7.9, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '骗', 'pinyin': 'pian4', 'highest pitch': 9.5, 'lowest pitch': 7.09, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '取', 'pinyin': 'qv3', 'highest pitch': 7.18, 'lowest pitch': 4.39, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '高', 'pinyin': 'gao1', 'highest pitch': 9.57, 'lowest pitch': 8.95, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '额', 'pinyin': 'e2', 'highest pitch': 8.95, 'lowest pitch': 7.06, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '保', 'pinyin': 'bao2', 'highest pitch': 8.12, 'lowest pitch': 6.49, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '险', 'pinyin': 'xian3', 'highest pitch': 8.12, 'lowest pitch': 4.95, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '金', 'pinyin': 'jin1', 'highest pitch': 8.31, 'lowest pitch': 5.19, 'duration': 0.31, 'prosody hierarchy': '#4'}]