A man paints an orange wall.
A person is making street art.
Just because a man paints a wall doesn't necessarily mean that he is making street art.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_paint(e1) & n_wall(x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_art(x2) & of(x2,x3) & n_street(x3) & n_person(x1))