他们为什么要这么做？
黑手党试图以此抹黑肯尼迪并将之作为要挟的工具。[{'character': '黑', 'pinyin': 'hei1', 'highest pitch': 11.22, 'lowest pitch': 10.43, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '手', 'pinyin': 'shou2', 'highest pitch': 10.84, 'lowest pitch': 7.99, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '党', 'pinyin': 'dang3', 'highest pitch': 6.36, 'lowest pitch': 5.41, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '试', 'pinyin': 'shiii4', 'highest pitch': 9.3, 'lowest pitch': 6.36, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '图', 'pinyin': 'tu2', 'highest pitch': 8.6, 'lowest pitch': 7.12, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '以', 'pinyin': 'i2', 'highest pitch': 9.29, 'lowest pitch': 7.44, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '此', 'pinyin': 'cii2', 'highest pitch': 7.64, 'lowest pitch': 6.42, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '抹', 'pinyin': 'mo3', 'highest pitch': 7.99, 'lowest pitch': 4.84, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '黑', 'pinyin': 'hei1', 'highest pitch': 11.22, 'lowest pitch': 8.59, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '肯', 'pinyin': 'ken3', 'highest pitch': 8.63, 'lowest pitch': 5.91, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '尼', 'pinyin': 'ni2', 'highest pitch': 9.54, 'lowest pitch': 6.07, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '迪', 'pinyin': 'di2', 'highest pitch': 8.55, 'lowest pitch': 5.77, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.32}, {'character': '并', 'pinyin': 'bing4', 'highest pitch': 9.03, 'lowest pitch': 7.46, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '将', 'pinyin': 'jiang1', 'highest pitch': 9.83, 'lowest pitch': 7.46, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '之', 'pinyin': 'zhiii1', 'highest pitch': 9.85, 'lowest pitch': 9.12, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '作', 'pinyin': 'zuo4', 'highest pitch': 9.35, 'lowest pitch': 6.52, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 7.97, 'lowest pitch': 6.14, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '要', 'pinyin': 'iao1', 'highest pitch': 10.83, 'lowest pitch': 8.25, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '挟', 'pinyin': 'xie2', 'highest pitch': 10.65, 'lowest pitch': 5.82, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 7.77, 'lowest pitch': 7.53, 'duration': 0.08, 'prosody hierarchy': '#1'}, {'character': '工', 'pinyin': 'gong1', 'highest pitch': 8.88, 'lowest pitch': 8.5, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '具', 'pinyin': 'jv4', 'highest pitch': 8.7, 'lowest pitch': 5.56, 'duration': 0.25, 'prosody hierarchy': '#4'}]