Anchor: Someone with a colorful board is wind-surfing on a cloudy day.
Entailed: There a person wind surfing.
Contradiction: No one is windsurfing.
Contradiction: A man is at the beach.
Contradiction: You can find well-priced cameras and computers in Singapore.
Contradiction: Three dogs are biting each other.
Contradiction: An animal runs down a footbride in the fall.