Anchor: A boy has done a back flip into a swimming pool while another boy watches.
Entailed: Two boys are playing at the pool.
Contradiction: The two boys did a flip at the same time.
Contradiction: No foot traffic is allowed in the area.
Contradiction: Reached that level yet.
Contradiction: Susie was cleaning her car.
Contradiction: A PERSON IS RIDING A SKATEBOARD ON A RAMP.