premise1: A guy on a bike goes vertical near a ramp with a grassy, hilly terrain behind him.
premise2: A bike rider makes a jump on a halfpipe ramp.
premise3: A bicyclist is in the air over a ramp.
premise4: A bike rider on a ramp.
premise: A guy on a bike goes vertical near a ramp with a grassy, hilly terrain behind him. A bike rider makes a jump on a halfpipe ramp. A bicyclist is in the air over a ramp. A bike rider on a ramp.
hypothesis: A boy waiting.