Analysis of information sources in references of the Wikipedia article "Wuhan" in Portuguese language version.
云雾山地处黄陂区西北部，{...}，主峰海拔709米，属武汉市最高峰。
A Friendship City Agreement was signed between the Mayors of Wuhan and Christchurch on Tuesday 4 April 2006.
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云雾山地处黄陂区西北部，{...}，主峰海拔709米，属武汉市最高峰。
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A Friendship City Agreement was signed between the Mayors of Wuhan and Christchurch on Tuesday 4 April 2006.
