Anchor: A skateboarder is skateboarding on a ramp.
Entailed: A person is riding on a skateboard.
Contradiction: The skateboarder fell off his board.
Contradiction: There's a lot more to that campout.
Contradiction: Even though it is relatively safe during the day, you should take precautions there at night.
Contradiction: The Republican ads ignore all of the public's desires. 
Contradiction: Instinctive dislike wasn't the only thing.