A small boy is playing with rocks
The boy is outside near a lake.
We do not know if the boy is outside nor do we know if he is near a lake.
exists e1 s1 x1 x2.(with(e1,x2) & n_rock(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_small(s1) & Theme(s1,x1))
exists s1 x1 x2.(n_boy(x1) & near(s1,x2) & n_lake(x2) & Theme(s1,x1) & a_outside(s1))