A farmer with a bright yellow reflective vest drives his tractor .
There is a very good chance that a man wears a safety vest so others can see him while he drives his tractor .
There is a very good chance that a man wears a safety vest so others can see him while he drives his tractor .
It is unlikely that a man wears a safety vest so others can see him while he drives his tractor .
A man wears a safety vest so others can see him while he drives his tractor .