A dog looking over the backs of sheep.
a dog with some sheep
In order for a dog to be looking over sheep, the dog must be with sheep
exists e1 x1 x2 x3 x4.(n_back(x3) & a_topic(x1) & over(e1,x3) & of(x3,x4) & n_sheep(x4) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_dog(x1))
exists x1 x2.(a_topic(x1) & with(x1,x2) & n_sheep(x2) & n_dog(x1))