那么，该焊工是否有遵守相关的安全操作规定呢？
上海静安区“幺幺幺五”火灾就是由焊火引起的。[{'character': '上', 'pinyin': 'shang4', 'highest pitch': 10.68, 'lowest pitch': 8.97, 'duration': 0.3, 'prosody hierarchy': 'null'}, {'character': '海', 'pinyin': 'hai3', 'highest pitch': 8.97, 'lowest pitch': 5.38, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '静', 'pinyin': 'jing4', 'highest pitch': 9.26, 'lowest pitch': 9.02, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 9.32, 'lowest pitch': 8.88, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '区', 'pinyin': 'qv1', 'highest pitch': 9.65, 'lowest pitch': 9.08, 'duration': 0.38, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '幺', 'pinyin': 'iao1', 'highest pitch': 10.82, 'lowest pitch': 9.9, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '幺', 'pinyin': 'iao1', 'highest pitch': 10.82, 'lowest pitch': 10.08, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '幺', 'pinyin': 'iao1', 'highest pitch': 10.82, 'lowest pitch': 9.96, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '五', 'pinyin': 'u2', 'highest pitch': 10.07, 'lowest pitch': 7.66, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '火', 'pinyin': 'huo3', 'highest pitch': 9.6, 'lowest pitch': 3.92, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '灾', 'pinyin': 'zai1', 'highest pitch': 9.01, 'lowest pitch': 7.41, 'duration': 0.32, 'prosody hierarchy': '#2'}, {'character': '就', 'pinyin': 'jiou4', 'highest pitch': 9.8, 'lowest pitch': 7.77, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 7.98, 'lowest pitch': 6.63, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '由', 'pinyin': 'iou2', 'highest pitch': 8.31, 'lowest pitch': 6.11, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '焊', 'pinyin': 'han4', 'highest pitch': 11.07, 'lowest pitch': 8.31, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '火', 'pinyin': 'huo3', 'highest pitch': 9.6, 'lowest pitch': 3.98, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '引', 'pinyin': 'in2', 'highest pitch': 7.07, 'lowest pitch': 4.89, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '起', 'pinyin': 'qi3', 'highest pitch': 7.07, 'lowest pitch': 4.63, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 5.7, 'lowest pitch': 5.07, 'duration': 0.21, 'prosody hierarchy': '#4'}]