A little boy is in a swimming pool with goggles on , covering his mouth and nose with his hands just above the surface of the water .
It is probable that a little boy is swimming in a pool just above the surface of the water because he is drowning .
It is impossible that a little boy is swimming in a pool just above the surface of the water because he is drowning .
It is probable that a little boy is swimming in a pool just above the surface of the water because he is drowning .
A little boy is swimming in a pool just above the surface of the water because he is drowning .