A dog leaps on the beach.
A dog is leaping in the sand.
The dog is leaping on the sand so the dog must be on the beach.
exists e1 x1 x2.(n_beach(x2) & on(e1,x2) & Actor(e1,x1) & v_leap(e1) & n_dog(x1))
exists e1 x1 x2.(n_sand(x2) & in(e1,x2) & Actor(e1,x1) & v_leap(e1) & n_dog(x1))