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A trader works in the crude oil and natural gas options pit on the floor of the New York Mercantile Exchange in New York in this August 8, 2011 file photo. Sentiment at Asia's top companies fell in the third quarter, hitting its lowest level since the fourth quarter of 2009 as doubts about the strength of the global economy weighed, a Reuters survey showed. Weak U.S. economic data, a debt crisis in the euro zone and worries about inflation and tighter monetary policy in Asia have clouded the outlook for the global economy, denting sentiment across the board. REUTERS/Shannon Stapleton/Files