Premise: A boy is up in the air on his bicycle, and there is a city landscape in the background.

Hypothesis: Some one is airborne on a contraption of some kind; a city is within view.
Relation: entailment

Hypothesis: The U.S. Senator is doing wheelies on his Rascal Scooter in the underground bunker.
Relation: contradiction

Hypothesis: A kid is getting some air on his BMX with L.A. as a backdrop.
Relation: neutral