A man is drawing on the ground.
A man is drawing a stick figure.
A drawing can be of many kinds and need not be about a stick figure.
exists e1 x1 x2.(n_ground(x2) & on(e1,x2) & Actor(e1,x1) & v_draw(e1) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_draw(e1) & n_figure(x2) & of(x2,x3) & n_stick(x3) & n_man(x1))