A man on a ladders is cleaning the ceiling with a brush.
A woman is on a ladder.
The person is either a man or woman
exists e1 x1 x2 x3 x4.(n_ceiling(x3) & Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & with(x3,x4) & n_brush(x4) & on(x1,x2) & n_ladder(x2) & n_man(x1))
exists p1 x1.(exists x2.(on(x1,x2) & n_ladder(x2)) & n_woman(x1))