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Tokyo is the seat of the Japanese government and the Imperial Palace, the home of the Japanese Imperial Family, and the de facto capital of Japan.
Tokyo as an administrative region, known as "Tokyo Metropolis", is one of 47 prefectures of Japan and is not administered as a single city. It consists of twenty-three central "special wards" (which were administered as Tokyo City until 1943, although no such city exists de jure) and many suburban cities. About 12 million people (10 percent of Japan's population) live within Tôkyô-to's prefectural boundaries.
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