A group of workers wearing orange vest painting in a British rail station.
Some felons are performing work duty.
All groups of workers who are wearing orange vests are not felons.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & in(x4,x7) & n_station(x7) & of(x7,x8) & n_rail(x8) & a_british(s1) & Theme(s1,x7) & n_painting(x4) & of(x4,x6) & n_vest(x6) & of(x4,x5) & n_orange(x5) & (x1 = x3) & of(x1,x2) & n_worker(x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_duty(x2) & of(x2,x3) & n_work(x3) & n_felon(x1))