An authority-figure in a white helmet , wearing a yellow vest , and sitting on a yellow motorcycle .
There is almost no chance that a man wearing a white helmet , yellow vest and blue pants is sitting on a motorcycle .
Chances are about even that a man wearing a white helmet , yellow vest and blue pants is sitting on a motorcycle .
There is almost no chance that a man wearing a white helmet , yellow vest and blue pants is sitting on a motorcycle .
A man wearing a white helmet , yellow vest and blue pants is sitting on a motorcycle .