A man on a scaffold paints a wall with a paint roller.
There is a man that is sitting on a ladder.
It is not possible to be on a ladder and a scaffold at the same time.
exists e1 x1 x2 x3 x4 x5.(with(e1,x4) & n_roller(x4) & of(x4,x5) & n_paint(x5) & Theme(e1,x3) & Actor(e1,x1) & v_paint(e1) & n_wall(x3) & on(x1,x2) & n_scaffold(x2) & n_man(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & on(e1,x4) & n_ladder(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_man(x2))