The dog is walking on the sand beside the ocean.
A dog pulls his owner into the ocean.
A dog can walk beside the ocean even if his owner isn't present. It cannot be inferred that a dog walking beside the ocean pulls anyone into the ocean.
exists e1 x1 x2 x3.(n_ocean(x3) & n_sand(x2) & n_dog(x1) & beside(e1,x3) & on(e1,x2) & Actor(e1,x1) & v_walk(e1))
exists e1 x1 x2 x3.(n_ocean(x3) & into(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_owner(x2) & of(x2,x1) & n_male(x1) & n_dog(x1))