premise1: A skateboarder becomes airborne at the top of a black and yellow ramp.
premise2: A skateboarder does a trick on a black and yellow striped ramp.
premise3: A man performing a skateboard jump off the top of a ramp.
premise4: This man is doing a stunt on a skateboard outdoors.
premise: A skateboarder becomes airborne at the top of a black and yellow ramp. A skateboarder does a trick on a black and yellow striped ramp. A man performing a skateboard jump off the top of a ramp. This man is doing a stunt on a skateboard outdoors.
hypothesis: A skater does a trick.