Anchor: Three surfers walking down a beach.
Entailed: There are three surfers.
Contradiction: There are four skateboarders.
Contradiction: The group of me in tuxedoes are going mud wrestling.
Contradiction: If you don't want to sail, then take the harbor cruise.
Contradiction: The inspector had no means of taking pictures while sitting in the death chamber.
Contradiction: Idealists are not happy with the method of fighting that is being used.