Anchor: a lone bicyclist jumping a trick along a bike jumping path.
Entailed: A person is doing tricks on a bike on a bike trail.
Contradiction: A person is on a unicycle in the road.
Contradiction: People are at a concert.
Contradiction: Led Zeppelin was real big when I was in junior high school.
Contradiction: The man dressed in black is polishing the motorcycle.
Contradiction: The thought entered his mind suddenly.