sentence: A young man wearing a white shirt and helmet and black pants is holding a skateboard in his hands as he walks. sentence:  He puts the skateboard down and begins skating on an asphalt road. sentence:  He flips the skateboard several times and goes on circles. sentence:  Two people walk past him as he continues to skateboard. sentence:  The man begins to speed up on his skateboard as he goes down the road. sentence:  He also skates past a lake on a long and winding road. sentence:  He skates past a field and mountains that are filled with greenery. sentence:  He tries various stunts and tricks on his skateboard. sentence:  He continues to skateboard through the roads. sentence:  He falls off the skateboard on the side of the road, but gets right back on it and skates away.