U.S. shares closed lower on Wednesday falling after the Federal Reserve minutes from the last meeting were released signaling that the U.S. central bank may start tapering its bond-purchasing program on one of its next meetings. The Standard & Poor's 500 Index dropped 0.36% to 1,781.37, the Dow Jones industrial average fell 0.41% to 15,900.82 and the Nasdaq Composite Index slid 0.26% to 3,921.27.