Anchor: A hockey player keeps his eye on the game.
Entailed: A hockey player keeps his eye on the game.
Contradiction: A hokey player is sleeping.
Contradiction: The tractor is plowing the field.
Contradiction: A child in a windbreaker is riding a bike.
Contradiction: The pitcher is throwing the ball, trying to strike out the batter.
Contradiction: Two people are on a drag strip.