这是怎么发生的？
据民警介绍，起火地点为兰考人袁厉害家。[{'character': '据', 'pinyin': 'jv4', 'highest pitch': 9.9, 'lowest pitch': 9.32, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '民', 'pinyin': 'min2', 'highest pitch': 11.29, 'lowest pitch': 8.35, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '警', 'pinyin': 'jing3', 'highest pitch': 11.29, 'lowest pitch': 6.53, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '介', 'pinyin': 'jie4', 'highest pitch': 8.03, 'lowest pitch': 6.69, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '绍', 'pinyin': 'shao4', 'highest pitch': 7.88, 'lowest pitch': 5.82, 'duration': 0.26, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.26}, {'character': '起', 'pinyin': 'qi2', 'highest pitch': 8.52, 'lowest pitch': 8.18, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '火', 'pinyin': 'huo3', 'highest pitch': 8.85, 'lowest pitch': 6.19, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '地', 'pinyin': 'di4', 'highest pitch': 8.38, 'lowest pitch': 6.37, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '点', 'pinyin': 'dian3', 'highest pitch': 6.97, 'lowest pitch': 4.47, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 7.66, 'lowest pitch': 6.81, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '兰', 'pinyin': 'lan2', 'highest pitch': 9.76, 'lowest pitch': 6.59, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '考', 'pinyin': 'kao3', 'highest pitch': 9.76, 'lowest pitch': 4.68, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.79, 'lowest pitch': 4.68, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '袁', 'pinyin': 'van2', 'highest pitch': 8.7, 'lowest pitch': 6.46, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '厉', 'pinyin': 'li4', 'highest pitch': 9.84, 'lowest pitch': 8.7, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '害', 'pinyin': 'hai4', 'highest pitch': 10.6, 'lowest pitch': 6.9, 'duration': 0.26, 'prosody hierarchy': '#1'}, {'character': '家', 'pinyin': 'jia1', 'highest pitch': 7.4, 'lowest pitch': 6.71, 'duration': 0.33, 'prosody hierarchy': '#4'}]