Anchor: a group of surfers catching a wave
Entailed: Surfers are catching a wave.
Contradiction: Surfers are on the beach.
Contradiction: He has more points than Scottie Pippen 
Contradiction: The top of the case was loose and fell on the floor.
Contradiction: The man stands with nothing in his hands in an office in New York.
Contradiction: The young man is riding a skateboard.