你认为谁是俄罗斯的最高领导人？
普京与卡巴耶娃。[{'character': '普', 'pinyin': 'pu3', 'highest pitch': 13.68, 'lowest pitch': 6.65, 'duration': 0.34, 'prosody hierarchy': 'null'}, {'character': '京', 'pinyin': 'jing1', 'highest pitch': 10.72, 'lowest pitch': 6.65, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.09}, {'character': '与', 'pinyin': 'v2', 'highest pitch': 9.15, 'lowest pitch': 8.05, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '卡', 'pinyin': 'ka3', 'highest pitch': 6.36, 'lowest pitch': 5.9, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '巴', 'pinyin': 'ba1', 'highest pitch': 9.33, 'lowest pitch': 6.02, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '耶', 'pinyin': 'ie1', 'highest pitch': 10.45, 'lowest pitch': 9.19, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '娃', 'pinyin': 'ua2', 'highest pitch': 10.28, 'lowest pitch': 6.04, 'duration': 0.35, 'prosody hierarchy': '#4'}]