A man is floating on a small boat down a city water street .
Chances are about even that a man is casually sightseeing the city as he travels on his boat .
Chances are about even that a man is casually sightseeing the city as he travels on his boat .
It is almost certain that a man is casually sightseeing the city as he travels on his boat .
A man is casually sightseeing the city as he travels on his boat .