Men wearing hardhats inspect a construction site in Tokyo June 10, 2015. Japan's core machinery orders unexpectedly rose in April at the fastest pace in four months, in a sign companies are turning more optimistic about business investment as domestic demand strengthens. The 3.8 percent month-on-month rise in core orders, a highly volatile data series seen as an indicator of capital spending in the coming six to nine months, compares with the median estimate of a 2.0 percent annual decline and follows a 2.9 percent increase in March. REUTERS/Thomas Peter?