Two men in orange coveralls shovel snow off railroad tracks.
The men are working.
The men are working when they shovel snow off railroad tracks.
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 e1 x1.(n_man(x1) & Actor(e1,x1) & v_work(e1))