sentence: A man is seen talking with a camera very close to his face. sentence:  Another man with a helmet on is standing near by. sentence:  A third man is seen in a car next to the man talking. sentence:  The man wearing the helmet starts down the street on a skateboard. sentence:  The man goes down a few very steep hills on his skateboard. sentence:  The man rides past a stop sign. sentence:  The man with the camera and the man in the car follow filming the man on the skateboard. sentence:  After the stop sign, the car passes the man on the skateboard. sentence:  The car stops and the man on the skateboard stops just past them and picks up his skateboard.