| http://www.w3.org/ns/prov#value | - WARREN, Pa. -- United Refining Co. has started running patriotic TV ads in western Pennsylvania touting that all of its crude oil comes from North America and is refined into gasoline, diesel and other products in its home base of Warren, Pa., said The Pittsburgh Tribune-Review.Through its 370 Kwik Fill/Red Apple and Country Fair locations in western Pennsylvania, eastern Ohio and western New York
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