你怎么会认识桑康？
桑康也在坤沙部队服过役，后来投奔糯康。[{'character': '桑', 'pinyin': 'sang1', 'highest pitch': 10.58, 'lowest pitch': 10.26, 'duration': 0.34, 'prosody hierarchy': 'null'}, {'character': '康', 'pinyin': 'kang1', 'highest pitch': 11.1, 'lowest pitch': 10.33, 'duration': 0.37, 'prosody hierarchy': '#2'}, {'character': '也', 'pinyin': 'ie3', 'highest pitch': 7.91, 'lowest pitch': 5.69, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 7.48, 'lowest pitch': 5.69, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '坤', 'pinyin': 'kuen1', 'highest pitch': 9.3, 'lowest pitch': 8.66, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '沙', 'pinyin': 'sha1', 'highest pitch': 10.43, 'lowest pitch': 8.82, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '部', 'pinyin': 'bu4', 'highest pitch': 10.43, 'lowest pitch': 7.23, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '队', 'pinyin': 'duei4', 'highest pitch': 7.9, 'lowest pitch': 6.31, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '服', 'pinyin': 'fu2', 'highest pitch': 7.26, 'lowest pitch': 6.23, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 10.26, 'lowest pitch': 9.32, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '役', 'pinyin': 'i4', 'highest pitch': 10.67, 'lowest pitch': 6.32, 'duration': 0.22, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.23}, {'character': '后', 'pinyin': 'hou4', 'highest pitch': 9.02, 'lowest pitch': 7.05, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '来', 'pinyin': 'lai2', 'highest pitch': 7.05, 'lowest pitch': 5.85, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '投', 'pinyin': 'tou2', 'highest pitch': 7.53, 'lowest pitch': 6.44, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '奔', 'pinyin': 'ben4', 'highest pitch': 9.72, 'lowest pitch': 7.53, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '糯', 'pinyin': 'nuo4', 'highest pitch': 9.54, 'lowest pitch': 6.47, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '康', 'pinyin': 'kang1', 'highest pitch': 11.1, 'lowest pitch': 6.47, 'duration': 0.33, 'prosody hierarchy': '#4'}]