Anchor: Two boys are onlooking during an outside classical music performance.
Entailed: Two boys outside at a concert.
Contradiction: Two girls are at the mall listening to pop music.
Contradiction: I totally understand you, said Tuppence, "You're absolutely right."
Contradiction: A man is sleeping outside.
Contradiction: John D. Rockefeller was never of any interest to Nelson because he was of no use.
Contradiction: two men start to walk across the street