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** FILE ** In this Sept. 2, 2012, file photo, the survey ship Koyo Maru, left, chartered by Tokyo city officials, sails around Minamikojima, foreground, Kitakojima, middle right, and Uotsuri, background, the tiny islands in the East China Sea, called Senkaku in Japanese and Diaoyu in Chinese. (AP Photo/Kyodo News, File)

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