Four men in orange vests work on a road at night.
Four men in orange vests are out in the dark.
At night implies being dark.
exists e1 x1 x2 x3 x4 x5.(at(e1,x5) & n_night(x5) & on(e1,x4) & n_road(x4) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_orange(x3) & n_man(x1) & card_eq_4(x1))
exists s1 x1 x2 x3 x4.(n_dark(x4) & in(s1,x4) & Theme(s1,x1) & a_out(s1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_orange(x3) & n_man(x1) & card_eq_4(x1))