Question: When did Randolph Churchill's former wife help form a nonprofit organization?
Sentence (from "American-Russian Cultural Cooperation Foundation"): Founded in 1992 by a group of prominent Americans, including former Missouri Congressman James W. Symington, Pamela Harriman, former Chief of Staff and Tennessee Senator Howard Baker, and businessman Bill Marriott, the nonprofit has organized concerts, exhibitions, galas, and other cultural events that highlight the history of American-Russian cultural interactions.
Relevant evidence: Yes