Two boys playing around the shores of a lake with one boy in a teal shirt throwing rocks into the lake .
There is a better than even chance that the boys are playing with stone , ready to swim in the lake afterwards .
There is a better than even chance that the boys are playing with stone , ready to swim in the lake afterwards .
It is improbable that the boys are playing with stone , ready to swim in the lake afterwards .
The boys are playing with stone , ready to swim in the lake afterwards .