Anchor: A boy skateboards off a ramp covered in graffiti.
Entailed: A person is using his skateboard  near a ramp.
Contradiction: A girl skateboards off a cliff with ancient carvings on it.
Contradiction: They expected to wait a while to learn more of the crooks.
Contradiction: Someone jogs.
Contradiction: The screens are perfect 
Contradiction: Someone is skateboarding.