Anchor: Hockey player in red hockey shirt with white and blue accents wearing a blue helmet on the ice.
Entailed: There is a hockey player.
Contradiction: Nobody is wearing a helmet.
Contradiction: Two motorcyclists sit on their bikes outside of a bar.
Contradiction: There are two men in a classroom talking.
Contradiction: The man used the dagger to attack the merchant. 
Contradiction: Find the other coffee cup, and you have nothing to worry about.