| http://www.w3.org/ns/prov#value | - l that???s carried to refineries in the United States, where it???s turned into gasoline, diesel and other petroleum products that fuel and sustain our economy.Roughly half of the Canadian crude oil is derived from the Athabasca oil sands, an oil formation in northern Alberta that few people 20 years ago could have imagined would become the world???s second largest oil reserve and transform the ec
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