A man is painting a portrait based on a picture.
A man paints a portrait of himself.
A photo does not have to be a portrait of himself.
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_paint(e2) & on(e1,x4) & n_picture(x4) & Theme(e1,x3) & v_base(e1) & (x2 = x3) & n_portrait(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_paint(e1) & of(x2,x1) & n_male(x1) & n_portrait(x2) & n_man(x1))