An old man is wearing a sun glass.
A man is wearing ray bans
Not all sunglasses are ray bans.
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_glass(x2) & of(x2,x3) & n_sun(x3) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_ban(x2) & of(x2,x3) & n_ray(x3) & n_man(x1))