发生了什么事情？
车内安全气囊打开。[{'character': '车', 'pinyin': 'che1', 'highest pitch': 9.83, 'lowest pitch': 9.6, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '内', 'pinyin': 'nei4', 'highest pitch': 9.98, 'lowest pitch': 8.39, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 10.55, 'lowest pitch': 9.73, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '全', 'pinyin': 'qvan2', 'highest pitch': 10.38, 'lowest pitch': 7.54, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '气', 'pinyin': 'qi4', 'highest pitch': 9.29, 'lowest pitch': 8.0, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '囊', 'pinyin': 'nang2', 'highest pitch': 8.94, 'lowest pitch': 6.54, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '打', 'pinyin': 'da3', 'highest pitch': 8.94, 'lowest pitch': 4.65, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '开', 'pinyin': 'kai1', 'highest pitch': 8.37, 'lowest pitch': 7.95, 'duration': 0.36, 'prosody hierarchy': '#4'}]