A man in a cowboy hat rides a horse.
A rugged looking cowboy rides a black horse
We don't know that the man in a cowboy hat is a rugged looking cowboy.
exists e1 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_horse(x4) & in(x1,x2) & n_hat(x2) & of(x2,x3) & n_cowboy(x3) & n_man(x1))
exists e1 e2 s1 s2 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & n_horse(x2) & a_black(s2) & Theme(s2,x2) & n_cowboy(x1) & Actor(e1,x1) & v_look(e1) & a_rugged(s1) & Theme(s1,x1))