a man bent down gathering books.
The man is sleeping.
A man gathering books cannot also be sleeping.
exists x1 x2 x3 x4.(a_topic(x1) & down(x1,x3) & n_book(x3) & of(x3,x4) & n_gathering(x4) & n_bent(x1) & of(x1,x2) & n_man(x2))
exists e1 x1.(n_man(x1) & Actor(e1,x1) & v_sleep(e1))