Anchor: A man in a black shirt wanders around amongst fencing players.
Entailed: A man is wearing a black shirt.
Contradiction: A man is wearing a red shirt.
Contradiction: a woman sits in a chair
Contradiction: Students sit in a circle
Contradiction: Two adults stand motionless, discussing the ethics of proper Frisbee playing, with no Frisbee anywhere to be seen.
Contradiction: I like to play sports like tennis and racquetball, but I don't like to just go out and exercise in a disciplined way.