Anchor: Man paddling a boat on a river near the bank.
Entailed: There is water under him.
Contradiction: A great white shark jumps out of the river, on the the boat.
Contradiction: Man is driving a car.
Contradiction: A man is sitting on the beach.
Contradiction: He is on land.
Contradiction: A boat is being driven by geese who are too tired to fly south on their own wings.