那么请问魏敏生教授是谁?
魏敏生教授为记者举了个例。[{'character': '魏', 'pinyin': 'uei4', 'highest pitch': 11.28, 'lowest pitch': 10.43, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '敏', 'pinyin': 'min3', 'highest pitch': 10.43, 'lowest pitch': 6.37, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '生', 'pinyin': 'sheng1', 'highest pitch': 9.93, 'lowest pitch': 6.7, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '教', 'pinyin': 'jiao4', 'highest pitch': 10.47, 'lowest pitch': 8.39, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '授', 'pinyin': 'shou4', 'highest pitch': 13.14, 'lowest pitch': 7.05, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '为', 'pinyin': 'uei4', 'highest pitch': 11.28, 'lowest pitch': 6.13, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '记', 'pinyin': 'ji4', 'highest pitch': 7.83, 'lowest pitch': 5.96, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '者', 'pinyin': 'zhe2', 'highest pitch': 6.87, 'lowest pitch': 5.96, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '举', 'pinyin': 'jv3', 'highest pitch': 7.06, 'lowest pitch': 5.1, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 5.9, 'lowest pitch': 4.71, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '个', 'pinyin': 'ge4', 'highest pitch': 10.49, 'lowest pitch': 8.55, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '例', 'pinyin': 'li4', 'highest pitch': 8.55, 'lowest pitch': 5.63, 'duration': 0.26, 'prosody hierarchy': '#4'}]