Anchor: A youg boy in a blue shirt walks through a park.
Entailed: A young boy in blue shirt is at the park.
Contradiction: The young boy is home playing video game.
Contradiction: The ballerina blocked the ball.
Contradiction: No it works better for me if they come pick it up. 
Contradiction: Congress maintains the Department of Defense Dictionary.
Contradiction: The man has a sharp tool in his hand.