黄龙云是谁？
活动由黄龙云主持，汪洋发表了热情洋溢的讲话。[{'character': '活', 'pinyin': 'huo2', 'highest pitch': 8.65, 'lowest pitch': 7.99, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '动', 'pinyin': 'dong4', 'highest pitch': 10.84, 'lowest pitch': 7.77, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'character': '由', 'pinyin': 'iou2', 'highest pitch': 9.84, 'lowest pitch': 7.76, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '黄', 'pinyin': 'huang2', 'highest pitch': 9.92, 'lowest pitch': 7.73, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '龙', 'pinyin': 'long2', 'highest pitch': 10.16, 'lowest pitch': 9.25, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '云', 'pinyin': 'vn2', 'highest pitch': 9.63, 'lowest pitch': 6.76, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '主', 'pinyin': 'zhu3', 'highest pitch': 9.76, 'lowest pitch': 4.74, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '持', 'pinyin': 'chiii2', 'highest pitch': 6.56, 'lowest pitch': 5.38, 'duration': 0.34, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.35}, {'character': '汪', 'pinyin': 'uang1', 'highest pitch': 9.5, 'lowest pitch': 8.98, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '洋', 'pinyin': 'iang2', 'highest pitch': 9.07, 'lowest pitch': 6.22, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 8.8, 'lowest pitch': 7.86, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '表', 'pinyin': 'biao3', 'highest pitch': 7.74, 'lowest pitch': 4.67, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 6.66, 'lowest pitch': 4.67, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '热', 'pinyin': 're4', 'highest pitch': 10.42, 'lowest pitch': 6.66, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '情', 'pinyin': 'qing2', 'highest pitch': 9.07, 'lowest pitch': 7.75, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '洋', 'pinyin': 'iang2', 'highest pitch': 9.07, 'lowest pitch': 6.1, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '溢', 'pinyin': 'i4', 'highest pitch': 10.34, 'lowest pitch': 8.9, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.2, 'lowest pitch': 6.39, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '讲', 'pinyin': 'jiang3', 'highest pitch': 7.42, 'lowest pitch': 4.7, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '话', 'pinyin': 'hua4', 'highest pitch': 8.68, 'lowest pitch': 5.14, 'duration': 0.31, 'prosody hierarchy': '#4'}]