A small brown dog plays with a ball on the beach.
A dog plays with a ball that it found in the water.
Not all balls on the beach are found in the water.
exists e1 s1 s2 x1 x2 x3.(n_beach(x3) & with(e1,x2) & on(x2,x3) & n_ball(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_brown(s2) & Theme(s2,x1) & a_small(s1) & Theme(s1,x1))
exists e2 e1 x1 x2 x3 x4.(n_water(x4) & with(e1,x2) & in(e2,x4) & Theme(e2,x3) & Actor(e2,x1) & v_find(e2) & (x2 = x3) & n_thing(x1) & n_ball(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))