An ethnic man is wearing a headpiece.
A man has a headpiece.
"A man" is a rephrasing of "an ethnic man".
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_headpiece(x2) & n_man(x1) & a_ethnic(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_headpiece(x2) & n_man(x1))