A man in a black shirt looks on with a grin while standing in front of two trays holding glasses with a yellow liquid .
Chances are about even that a waiter has some trays of soda to deliver .
Chances are about even that a waiter has some trays of soda to deliver .
There is almost no chance that a waiter has some trays of soda to deliver .
A waiter has some trays of soda to deliver .