聂某是谁？
警方认定聂某具有重大嫌疑。[{'character': '警', 'pinyin': 'jing3', 'highest pitch': 8.5, 'lowest pitch': 7.35, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '方', 'pinyin': 'fang1', 'highest pitch': 10.59, 'lowest pitch': 7.35, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '认', 'pinyin': 'ren4', 'highest pitch': 10.71, 'lowest pitch': 8.81, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '定', 'pinyin': 'ding4', 'highest pitch': 9.5, 'lowest pitch': 7.14, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.13}, {'character': '聂', 'pinyin': 'nie4', 'highest pitch': 11.21, 'lowest pitch': 9.1, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '某', 'pinyin': 'mou3', 'highest pitch': 9.1, 'lowest pitch': 5.49, 'duration': 0.3, 'prosody hierarchy': '#2'}, {'character': '具', 'pinyin': 'jv4', 'highest pitch': 7.83, 'lowest pitch': 7.13, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 7.13, 'lowest pitch': 5.43, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '重', 'pinyin': 'zhong4', 'highest pitch': 9.7, 'lowest pitch': 5.73, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '大', 'pinyin': 'da4', 'highest pitch': 8.65, 'lowest pitch': 7.05, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '嫌', 'pinyin': 'xian2', 'highest pitch': 7.29, 'lowest pitch': 6.45, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '疑', 'pinyin': 'i2', 'highest pitch': 7.74, 'lowest pitch': 6.18, 'duration': 0.29, 'prosody hierarchy': '#4'}]