你为什么要在峡谷里点火呢？
罗森塔尔在峡谷中两度点火求救，终为救援人员发现。[{'character': '罗', 'pinyin': 'luo2', 'highest pitch': 10.15, 'lowest pitch': 8.21, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '森', 'pinyin': 'sen1', 'highest pitch': 11.53, 'lowest pitch': 11.1, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '塔', 'pinyin': 'ta2', 'highest pitch': 10.23, 'lowest pitch': 7.56, 'duration': 0.29, 'prosody hierarchy': 'null'}, {'character': '尔', 'pinyin': 'er3', 'highest pitch': 9.86, 'lowest pitch': 4.71, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.82, 'lowest pitch': 6.78, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '峡', 'pinyin': 'xia2', 'highest pitch': 7.68, 'lowest pitch': 6.45, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '谷', 'pinyin': 'gu3', 'highest pitch': 7.1, 'lowest pitch': 5.79, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 9.49, 'lowest pitch': 5.79, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '两', 'pinyin': 'liang3', 'highest pitch': 8.65, 'lowest pitch': 6.1, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '度', 'pinyin': 'du4', 'highest pitch': 9.77, 'lowest pitch': 7.9, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '点', 'pinyin': 'dian2', 'highest pitch': 10.18, 'lowest pitch': 7.25, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '火', 'pinyin': 'huo3', 'highest pitch': 10.18, 'lowest pitch': 5.59, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '求', 'pinyin': 'qiou2', 'highest pitch': 6.89, 'lowest pitch': 5.64, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '救', 'pinyin': 'jiou4', 'highest pitch': 10.39, 'lowest pitch': 6.89, 'duration': 0.25, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.35}, {'character': '终', 'pinyin': 'zhong1', 'highest pitch': 9.49, 'lowest pitch': 8.69, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 8.69, 'lowest pitch': 7.0, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '救', 'pinyin': 'jiou4', 'highest pitch': 10.39, 'lowest pitch': 8.11, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '援', 'pinyin': 'van2', 'highest pitch': 8.43, 'lowest pitch': 7.97, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 8.4, 'lowest pitch': 6.92, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '员', 'pinyin': 'van2', 'highest pitch': 8.43, 'lowest pitch': 6.25, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 8.87, 'lowest pitch': 7.04, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 9.07, 'lowest pitch': 4.87, 'duration': 0.31, 'prosody hierarchy': '#4'}]