A dog splashes in the water
The dog is in the grass.
The dog may be on grass where there is water, but it does not state that the dog is splashing in water.
exists e1 x1 x2.(n_water(x2) & in(e1,x2) & Actor(e1,x1) & v_splash(e1) & n_dog(x1))
exists p1 x1 x2.(n_grass(x2) & n_dog(x1) & in(x1,x2))