Question: What is the name of this American oil producing, transporting, refining, and marketing company, for which Rebekah Harkness inherited the fortune in its holdings?
Sentence (from "Harkness Ballet"): Harkness Ballet, established in 1964, gave its debut performance in Cannes in 1965, with George Skibine as director, Marjorie Tallchief as ballerina and a repertory featuring work by Alvin Ailey, Skibine, Eric Bruhn, Brian Macdonald and Stuart Hodes, the company mostly toured abroad, in the major theaters of Europe, to great acclaim, giving its dancers and choreographers a cosmopolitan experience unknown to most of their American colleagues.
Relevant evidence: No