| http://www.w3.org/ns/prov#value | - rices, in particular energy and metals.Weakness in the US currency feeds upward pressure on commodities, which are priced in dollars and thus come at a discount on the foreign markets.One result has been a surge higher in gasoline prices to nearly $4 a gallon before the summer driving season even starts, a trend that economists say will be aggravated as demand increases and the summer storm season
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