Anchor: A wakeboarder in the ocean is in the middle of a flip.
Entailed: A person is outside.
Contradiction: A wakeboarder sits on the beach.
Contradiction: A person is inside.
Contradiction: A surfer is on the beach.
Contradiction: A wakeboarder is on a bench.
Contradiction: The weather is too severe for the wakeboarder to go into the ocean.