Text: Undaunted, Chatterbox marched off to a nearby bookstore and purchased What the Face  Basic and Applied Studies of Spontaneous Expression Using the Facial Action Coding System (FACS) , edited by Ekman and Erika Rosenberg.
Entailment: Chatterbox bought a book that was edited by Ekman Rosenberg.
Contradiction: Chatterbox has never bought a book.