Anchor: The three men are playing basketball on a blacktop.
Entailed: Men are playing a sport together.
Contradiction: The boys are playing tag on the blacktop.
Contradiction: Why do people tell you that they have the best lettuce in town?
Contradiction: Imagine NATO were to say that genocide is not allowed anywhere within their grasp.
Contradiction: "My Bed" is a piece of British art from the renaissance period. 
Contradiction: The man uses a power tool.