Three workers in fluorescent orange clothing cleaning the subway tracks.
The workers are using a mop to clean the tracks.
Not all tracks are subway tracks. Three workers can be included in the workers. Cleaning can involve using a mop. Cleaning does not necessarily involve using a mop. Not all workers are in fluorescent orange clothing.
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 p1 x1 x2 x3.(n_track(x3) & n_worker(x1) & Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_clean(e2)) & n_mop(x2))