A man walks past some graffiti of a group of guys in leather jackets and blue jeans on a tan wall .
Chances are about even that a man walking past graffi on his way to stop at the store .
Chances are about even that a man walking past graffi on his way to stop at the store .
It is highly unlikely that a man walking past graffi on his way to stop at the store .
A man walking past graffi on his way to stop at the store .