A young man , with billowy red-hair , lines up his shot of the 9 ball on a pool table .
It is certain that a young man is preparing to shoot the 9 ball into the pocket .
It is certain that a young man is preparing to shoot the 9 ball into the pocket .
It is probably not the case that a young man is preparing to shoot the 9 ball into the pocket .
A young man is preparing to shoot the 9 ball into the pocket .