A person in full protective gear is riding a green dirt-bike ( with the number 108 painted on its side ) on the ridge of a grassy field .
There is a better than even chance that a person is riding a light green dirt-bike .
There is a better than even chance that a person is riding a light green dirt-bike .
There is almost no chance that a person is riding a light green dirt-bike .
A person is riding a light green dirt-bike .