An old man with gray hair wearing a scarf and black jacket .
It is almost certain that an older man with gray hair wears a scarf while standing at the bus stop .
It is probably not the case that an older man with gray hair wears a scarf while standing at the bus stop .
It is almost certain that an older man with gray hair wears a scarf while standing at the bus stop .
An older man with gray hair wears a scarf while standing at the bus stop .