sentence: There's a teenage boy wearing a black beanie hat skateboarding through the city streets. sentence:  He skateboards wearing a white shirt while jumping over a small cement wall. sentence:  Then he jumps over another wall while skateboarding. sentence:  Then in a green shirt, he skateboards past a school, straight into a basketball court and then jumps over a metal railing. sentence:  Then back in a white shirt, he tries stunts by jumping up to a metal hand rail on his skateboard.