A man flies through the air on his skateboard above a white staircase .
It is probable that a man flying over a white staircase on his skateboard while sitting on the concrete .
It is impossible that a man flying over a white staircase on his skateboard while sitting on the concrete .
It is probable that a man flying over a white staircase on his skateboard while sitting on the concrete .
A man flying over a white staircase on his skateboard while sitting on the concrete .