premise1: A skateboarder grinds along a pipe beneath a fire escape.
premise2: A boy rides his skateboard across a pipe on a building.
premise3: A skateboarder jumping in front of a building.
premise4: A skateboarder rides down a city street.
premise: A skateboarder grinds along a pipe beneath a fire escape. A boy rides his skateboard across a pipe on a building. A skateboarder jumping in front of a building. A skateboarder rides down a city street.
hypothesis: A child flies through the air.