Anchor: A snowboarder rides his board off a graffiti covered wall at night.
Entailed: Someone is snowboarding.
Contradiction: A man is vandalizing a wall.
Contradiction: No one has ever fought with their parents nor has been forced to live on a limited income.
Contradiction: It's a task that he can't do.
Contradiction: Despite the storms in 1983 the majority of the structure remained intact.
Contradiction: Two people are sitting in a waiting room.