"这个人是如何被发现的？"
民警找到司机询问，得知其是陕北人王某雇用的。[{'character': '民', 'pinyin': 'min2', 'highest pitch': 11.22, 'lowest pitch': 8.81, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '警', 'pinyin': 'jing2', 'highest pitch': 11.22, 'lowest pitch': 8.9, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '找', 'pinyin': 'zhao3', 'highest pitch': 9.91, 'lowest pitch': 4.78, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '到', 'pinyin': 'dao4', 'highest pitch': 6.61, 'lowest pitch': 4.78, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '司', 'pinyin': 'sii1', 'highest pitch': 9.07, 'lowest pitch': 6.61, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '机', 'pinyin': 'ji1', 'highest pitch': 9.96, 'lowest pitch': 8.39, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '询', 'pinyin': 'xvn2', 'highest pitch': 9.76, 'lowest pitch': 5.5, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '问', 'pinyin': 'uen4', 'highest pitch': 10.01, 'lowest pitch': 6.94, 'duration': 0.25, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.24}, {'character': '得', 'pinyin': 'de2', 'highest pitch': 7.19, 'lowest pitch': 6.72, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '知', 'pinyin': 'zhiii1', 'highest pitch': 8.39, 'lowest pitch': 6.75, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '其', 'pinyin': 'qi2', 'highest pitch': 7.62, 'lowest pitch': 7.29, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 8.75, 'lowest pitch': 7.61, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '陕', 'pinyin': 'shan2', 'highest pitch': 9.98, 'lowest pitch': 5.97, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '北', 'pinyin': 'bei3', 'highest pitch': 10.68, 'lowest pitch': 5.99, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.74, 'lowest pitch': 5.28, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.1}, {'character': '王', 'pinyin': 'uang2', 'highest pitch': 10.46, 'lowest pitch': 6.92, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '某', 'pinyin': 'mou3', 'highest pitch': 11.5, 'lowest pitch': 5.89, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '雇', 'pinyin': 'gu4', 'highest pitch': 7.96, 'lowest pitch': 6.95, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '用', 'pinyin': 'iong4', 'highest pitch': 7.04, 'lowest pitch': 5.39, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 4.87, 'lowest pitch': 4.5, 'duration': 0.18, 'prosody hierarchy': '#4'}]