A person on a dirt-bike motorcycle wearing multicolored protective clothing and helmet spinning out on top of a sand dune with sand spurting out in a rooster tail behind the motorcycle .
It is probably the case that a man on a dirt bike trails a man on a motorcycle in a race .
There is little chance that a man on a dirt bike trails a man on a motorcycle in a race .
It is probably the case that a man on a dirt bike trails a man on a motorcycle in a race .
A man on a dirt bike trails a man on a motorcycle in a race .