The dog is waiting for his master.
A dog waits.
The dog that waits, has a master.
exists e1 x1 x2.(n_master(x2) & of(x2,x1) & n_male(x1) & n_dog(x1) & for(e1,x2) & Actor(e1,x1) & v_wait(e1))
exists x1 x2.(a_topic(x1) & n_wait(x1) & of(x1,x2) & n_dog(x2))