Three window washers in blue uniforms work on scaffolding.
There are people on a scaffolding.
Three washers or people are on scaffolding.
exists e1 s1 x1 x2 x3 x4.(on(e1,x4) & n_scaffolding(x4) & Actor(e1,x1) & v_work(e1) & in(x1,x3) & n_uniform(x3) & a_blue(s1) & Theme(s1,x3) & n_washer(x1) & of(x1,x2) & n_window(x2) & card_eq_3(x1))
exists p1 x1 x2 x3.((x1 = x2) & on(x2,x3) & n_scaffolding(x3) & n_people(x2))