| visitor looks at the stock quotation board at the Tokyo Stock Exchange in Tokyo May 20, 2013.(Reuters) - The Nikkei average climbed 1.6 percent to a fresh 5-1/2-year high on Wednesday, spurred on by the Bank of Japan's optimism about the economic outlook, while Sony Corp surged on reports it may consider a proposal to spin off its entertainment assets.As widely expected, the Bank of Japan kept policy... |