A boy on a chained swing looks to the right and smiles .
It is highly unlikely that a boy is on the swings , and smiles to a cute girl on the playground .
It is highly unlikely that a boy is on the swings , and smiles to a cute girl on the playground .
Chances are about even that a boy is on the swings , and smiles to a cute girl on the playground .
A boy is on the swings , and smiles to a cute girl on the playground .