Q:Formulate an answer to this elaborate question: Judith Exner, was an American woman who claimed to be the mistress of U.S. president John F. Kennedy and Mafia leaders Sam Giancana and John "Handsome Johnny" Roselli, was an influential mobster for the Chicago Outfit who helped that organization control Hollywood and the Las Vegas Strip, and died on which date?
A:
August 9, 1976