我们需要更多的证据来支持这个观点。
而村民们认为发病原因与地下水受到污染有关。[{'character': '而', 'pinyin': 'er2', 'highest pitch': 9.41, 'lowest pitch': 7.44, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '村', 'pinyin': 'cuen1', 'highest pitch': 10.73, 'lowest pitch': 9.41, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '民', 'pinyin': 'min2', 'highest pitch': 10.5, 'lowest pitch': 6.4, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 9.12, 'lowest pitch': 7.65, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '认', 'pinyin': 'ren4', 'highest pitch': 8.52, 'lowest pitch': 6.13, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 7.15, 'lowest pitch': 5.35, 'duration': 0.3, 'prosody hierarchy': '#3'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 10.9, 'lowest pitch': 10.43, 'duration': 0.3, 'prosody hierarchy': 'null'}, {'character': '病', 'pinyin': 'bing4', 'highest pitch': 10.68, 'lowest pitch': 6.87, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '原', 'pinyin': 'van2', 'highest pitch': 7.94, 'lowest pitch': 5.98, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '因', 'pinyin': 'in1', 'highest pitch': 10.0, 'lowest pitch': 7.94, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '与', 'pinyin': 'v3', 'highest pitch': 8.12, 'lowest pitch': 5.88, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '地', 'pinyin': 'di4', 'highest pitch': 9.9, 'lowest pitch': 9.42, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '下', 'pinyin': 'xia4', 'highest pitch': 10.05, 'lowest pitch': 7.37, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 7.37, 'lowest pitch': 3.74, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '受', 'pinyin': 'shou4', 'highest pitch': 8.29, 'lowest pitch': 6.64, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '到', 'pinyin': 'dao4', 'highest pitch': 7.25, 'lowest pitch': 6.15, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '污', 'pinyin': 'u1', 'highest pitch': 10.58, 'lowest pitch': 7.25, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '染', 'pinyin': 'ran2', 'highest pitch': 10.07, 'lowest pitch': 5.73, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 6.87, 'lowest pitch': 3.4, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '关', 'pinyin': 'guan1', 'highest pitch': 7.97, 'lowest pitch': 6.73, 'duration': 0.32, 'prosody hierarchy': '#4'}]