A painter on a ladder paints the brick exterior blue.
A painter on a ladder paints the brick exterior green.
The exerior cannot be painted green and blue at the same time
exists e1 x1 x2 x3 x4 x5.(n_blue(x3) & of(x3,x5) & n_exterior(x5) & of(x3,x4) & n_brick(x4) & Theme(e1,x3) & Actor(e1,x1) & v_paint(e1) & on(x1,x2) & n_ladder(x2) & n_painter(x1))
exists e1 x1 x2 x3 x4 x5.(n_green(x3) & of(x3,x5) & n_exterior(x5) & of(x3,x4) & n_brick(x4) & Theme(e1,x3) & Actor(e1,x1) & v_paint(e1) & on(x1,x2) & n_ladder(x2) & n_painter(x1))