Anchor: A man is pulling a cart down a dirt road, and a girl is riding in it.
Entailed: The man is outside with a girl.
Contradiction: The man and girl are inside singing on stage.
Contradiction: The two men are playing tug-of-war with a long rope near a river.
Contradiction: I was not doing the bidding for Bill Sikes.  
Contradiction: Two men are in an elevator.
Contradiction: All you have to do is provide the data and the planets will behave accordingly.