Japan’s economy slid back into recession in July-September as uncertainty over the overseas outlook hurt business investment, keeping policymakers under pressure to deploy new stimulus measures to support a fragile recovery. A rebound in private consumption and exports offered some hope the world’s third-largest economy is emerging from the doldrums, despite slowing Chinese demand and the pain households are feeling from rising imported food prices. “A big drop in inventory was the largest factor behind a third-quarter contraction.