A smiling boy swims underwater in a pool.
A child is outside
It is not implied that the boy is outside.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x4) & n_pool(x4) & n_underwater(x1) & of(x1,x3) & n_swim(x3) & of(x1,x2) & n_boy(x2) & Actor(e1,x1) & v_smile(e1))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_child(x1))