A little boy stands in the surf.
A little boy is at the playground.
The surf is not a playground.
exists e1 s1 x1 x2.(n_surf(x2) & in(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists p1 s1 x1 x2.(n_playground(x2) & at(x1,x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))