An old man is wearing a sun glass.
A person is protecting eyes from  sun.
A man is wearing sun glass  is protecting his eyes from sun.
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_protect(e1) & from(x2,x3) & n_sun(x3) & n_eye(x2) & n_person(x1))