Three workers in fluorescent orange clothing cleaning the subway tracks.
The workers are prisoners, which is why their clothes are bright orange.
Three workers can be included in the workers. Not all workers are prisoners. Workers can be prisoners. Prisoners can be workers. Not all prisoners are workers. Fluorescent orange can be bright orange. Bright orange is not necessarily fluorescent orange.
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 x1 x5.(n_clothes(x5) & of(x5,x1) & n_thing(x1) & n_worker(x1) & exists x2 x3.((x1 = x2) & exists e1 p2 x4.(n_reason(x4) & Topic(e1,p2) & Actor(e1,x3) & v_be(e1) & reason_rel(p2,x4) & exists s1 x6.((x5 = x6) & n_orange(x6) & a_bright(s1) & Theme(s1,x6))) & (x2 = x3) & n_prisoner(x2)))