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Tokyo's main Nikkei index closes higher

Tokyo's key Nikkei index edged up on Wednesday as US President Donald Trump's State of the Union address appeared to have a limited impact on the market.

Japan's benchmark Nikkei 225 index gained 0.14 percent or 29.61 points to end the session at 20,874.06, but the broader Topix index slipped 0.05 percent or 0.75 points to 1,582.13.