TOKYO (AP) — Asian markets were trading mixed Wednesday ahead of Fed Chair Jerome Powell’s highly anticipated speech later in the week. Japan’s benchmark Nikkei 225 added 0.5% to finish at 32,010.26. Australia’s S&P/ASX 200 gained 0.4% to 7,148.40. South Korea’s Kospi slipped 0.5% to 2,503.28. Hong …