Anchor: Two men at a concert performing for an audience.
Entailed: Two men are performing.
Contradiction: Two men are cleaning out a garage so they can pull in a new car.
Contradiction: Everyone came out into the open and greeted us.
Contradiction: A man on a ladder repairs the roof.
Contradiction: There is never screening for alcoholism in ambulatory care settings.
Contradiction: the surfer is at the beach