Two people outside cleaning windows while on a ledge of a boat.
Two people are doing boat maintenance.
cleaning windows can be considered maintenance
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & outside(x1,e1) & on(e1,x4) & of(x4,x5) & n_boat(x5) & n_ledge(x4) & r_while(e1) & Theme(e1,x3) & Actor(e1,x2) & v_clean(e1) & n_window(x3) & n_thing(x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_maintenance(x2) & of(x2,x3) & n_boat(x3) & n_people(x1) & card_eq_2(x1))