Three workers in fluorescent orange clothing cleaning the subway tracks.
The subway tracks will be cleaner once they are done.
Since they are cleaning the tracks they will be cleaner.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_track(x5) & of(x5,x6) & n_subway(x6) & a_topic(x1) & in(x1,x2) & Theme(e1,x5) & Actor(e1,x4) & v_clean(e1) & (x2 = x4) & n_clothing(x2) & of(x2,x3) & n_orange(x3) & a_fluorescent(s1) & Theme(s1,x2) & n_worker(x1) & card_eq_3(x1))
exists p1 s1 x1 x2.(n_thing(x1) & n_track(x1) & of(x1,x2) & n_subway(x2) & exists e1.(Theme(e1,x1) & v_do(e1)) & once(s1,p1) & r_more(s1) & Theme(s1,x1) & a_cleaner(s1))