A man wearing a white shirt and jeans is walking by looking at a large advertisement poster .
Chances are about even that a big red poster advertising a movie is seen by a man in blue shoes .
It is impossible that a big red poster advertising a movie is seen by a man in blue shoes .
Chances are about even that a big red poster advertising a movie is seen by a man in blue shoes .
A big red poster advertising a movie is seen by a man in blue shoes .