A skateboarder in a red baseball cap , black shirt and tan shorts skates alone in a wide open space .
A skateboarder has a blue baseball cap .
A skateboarder in a red baseball cap, black shirt and tan shorts skates alone in a wide open space.
A skateboarder has a blue baseball cap.
One cannot wear a red baseball cap and a blue baseball cap at the same time.
One can not wear a red baseball cap and a blue baseball cap at the same time .