A man sleeping on a black couch.
The couch is made out of leather.
Not all couch is made of leather.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_couch(x3) & a_black(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sleep(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_couch(x1) & r_out(e1) & of(e1,x2) & n_leather(x2) & Theme(e1,x1) & v_make(e1))