Three workers in fluorescent orange clothing cleaning the subway tracks.
Three people clean the subway tracks.
The people must be workers since they are cleaning the subway.
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 e1 x1 x2 x3.(n_track(x2) & of(x2,x3) & n_subway(x3) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_people(x1) & card_eq_3(x1))