A person carrying a child piggyback style on a beach chasing a frisbee rolling toward the water .
It is probable that a person carrying a child is chasing a stranger 's frisbee .
There is almost no chance that a person carrying a child is chasing a stranger 's frisbee .
It is probable that a person carrying a child is chasing a stranger 's frisbee .
A person carrying a child is chasing a stranger 's frisbee .