There is one man who is sitting on top of a school bus while another man walks down the aisle of the bus .
It is impossible that a woman is sitting on top of a school bus while man walks down the aisle of the bus .
It is impossible that a woman is sitting on top of a school bus while man walks down the aisle of the bus .
There is a very good chance that a woman is sitting on top of a school bus while man walks down the aisle of the bus .
A woman is sitting on top of a school bus while man walks down the aisle of the bus .