A dog in a "superman" shirt sleeps on a blanket.
A dog is having a nightmare on a blanket.
It is not imperative to have nightmare one should sleep on blanket.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_blanket(x4) & Theme(e1,x3) & Actor(e1,x1) & v_shirt(e1) & n_sleep(x3) & in(x1,x2) & n_superman(x2) & a_''(s1) & Theme(s1,x2) & n_dog(x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_blanket(x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_nightmare(x2) & n_dog(x1))