A dog shakes water off of himself.
An animal shaking.
A dog is an animal, so the dog is the animal shaking.
exists e1 x1 x2.(of(e1,x1) & n_male(x1) & r_off(e1) & Theme(e1,x2) & Actor(e1,x1) & v_shake(e1) & n_water(x2) & n_dog(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_shake(e1) & (x1 = x2) & n_animal(x1))