A dog retrieves a golf ball.
A dog obeys its owner.
A dog retrieving a golf ball does not imply that a dog obeys its owner.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_retrieve(e1) & n_ball(x2) & of(x2,x3) & n_golf(x3) & n_dog(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_obey(e1) & n_owner(x2) & of(x2,x1) & n_thing(x1) & n_dog(x1))