Anchor: My head thumped, my blood-pressure soared and I had to fight the constant urge to pee.
Entailed: I had to urinate.
Contradiction: I didn't have to pee.
Contradiction: A group of three people are swimming.
Contradiction: They shrugged.
Contradiction: A woman wearing a red dress.
Contradiction: The Aerodium is a sky-diving simulator.