Question: Genie Energy and which other oil and gas company, considered one of the seven 'Supermajor' oil companies, owns American Shale Oil, the developers of in-situ shale oil extraction technology in Rifle, Colorado?
Sentence (from "Union process"): The process technology was invented by the American oil company Unocal Corporation in late 1940s and was developed through several decades.
Relevant evidence: No