Anchor: His Floater had burnt out while still sufficiently distant from surface to have the fall stun him.
Entailed: He was stunned in the fall.
Contradiction: His Floater kept working the entire time.
Contradiction: A surfer gets knocked over by a shark.
Contradiction: the boy is in the park
Contradiction: The animals are sleeping next to a fire.
Contradiction: The U.S. would not tolerate negotiations with Hussein.