Anchor: A cowboy in a black hat holds on to a black and white bull as it begins to buck him off of its back.
Entailed: The cowboy held onto the crazy bull.
Contradiction: The cowboy is riding a horse.
Contradiction: A person sits in the snow.
Contradiction: Climbing a mountain using ice axes is rather dumb.
Contradiction: Bork laughed maniacally as his thunderstorm spell began to take hold. 
Contradiction: A guy is playing video games.