premise1: A boy in a blue shirt jumps down stairs on a skateboard.
premise2: A skateboarder jumps his board down a flight of stairs.
premise3: Skateboarder jumping down stairs of building.
premise4: A skateboarder sails over white steps.
premise: A boy in a blue shirt jumps down stairs on a skateboard. A skateboarder jumps his board down a flight of stairs. Skateboarder jumping down stairs of building. A skateboarder sails over white steps.
hypothesis: Man wearing jeans.