Two men in orange coveralls shovel snow off railroad tracks.
They are railroad workers.
Men taking care of railroad tracks implies that they are railroad workers.
exists e1 x1 x2 x3 x4 x5 x6.(off(e1,x5) & n_track(x5) & of(x5,x6) & n_railroad(x6) & Theme(e1,x4) & Actor(e1,x1) & v_shovel(e1) & n_snow(x4) & in(x1,x2) & n_coverall(x2) & of(x2,x3) & n_orange(x3) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(n_thing(x1) & exists x2 x3.((x1 = x2) & n_worker(x2) & of(x2,x3) & n_railroad(x3)))