Anchor: A SCUBA diver swimming deep underwater with a turtle.
Entailed: There is a turtle swimming deep under the water.
Contradiction: There is no turtle near the scuba diver.
Contradiction: The diver is walking on the beach.
Contradiction: The diver is on top of a mountain skiing.
Contradiction: The scuba diver was eaten by a shark.
Contradiction: A person is hunting for turtles in the water.