这是一场历史性的示威活动。
示威所在的广场内人满为患。[{'character': '示', 'pinyin': 'shiii4', 'highest pitch': 10.94, 'lowest pitch': 9.77, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '威', 'pinyin': 'uei1', 'highest pitch': 10.92, 'lowest pitch': 9.77, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '所', 'pinyin': 'suo3', 'highest pitch': 10.62, 'lowest pitch': 6.32, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.46, 'lowest pitch': 6.69, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.86, 'lowest pitch': 6.35, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '广', 'pinyin': 'guang2', 'highest pitch': 8.79, 'lowest pitch': 6.35, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '场', 'pinyin': 'chang3', 'highest pitch': 8.82, 'lowest pitch': 5.74, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '内', 'pinyin': 'nei4', 'highest pitch': 6.73, 'lowest pitch': 6.1, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.56, 'lowest pitch': 6.26, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '满', 'pinyin': 'man3', 'highest pitch': 10.44, 'lowest pitch': 5.44, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 7.75, 'lowest pitch': 5.18, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '患', 'pinyin': 'huan4', 'highest pitch': 10.76, 'lowest pitch': 7.25, 'duration': 0.28, 'prosody hierarchy': '#4'}]