| http://www.w3.org/ns/prov#value | - GENEVA, Jan 31 (Reuters) - Economic recovery will make food, metals and other raw materials more expensive in 2011, the head of the World Trade Organization said on Monday.Addressing a United Nations conference, WTO Director-General Pascal Lamy said the prices of crude oil, copper, gold, corn and soybeans would rise most this year, with less pronounced increases in natural gas, zinc and cattle.
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