A dog looks behind itself.
A dog is looking at a cat.
not every dog is near a cat.
exists e1 x1.(behind(e1,x1) & n_thing(x1) & Actor(e1,x1) & v_look(e1) & n_dog(x1))
exists e1 x1 x2.(at(e1,x2) & n_cat(x2) & Actor(e1,x1) & v_look(e1) & n_dog(x1))