Text: Ever since Seymour Hersh's book came out detailing the raw side of Jack Kennedy and the dark side of Camelot, I've been wondering what JFK did in today's context that warrants an eternal flame at Arlington National Cemetery.
Entailment: Seymour Hersh wrote a book that talks about the Jack Kennedy and Camelot.
Contradiction: Seymour Hersh is still to release a book about Jack Kennedy and Camelot.