a young man with a black striped shirt on skateboarding on a wall .
The skateboarder is young .
a young man with a black striped shirt on skateboarding on a wall.
The skateboarder is young.
if there is a young man skateboarding, the skateboarder is the man, and he is young.
if there is a young man skateboarding , the skateboarder is the man , and he is young .