Men at work shoveling snow from a rail track.
Men are working.
men at work can be described as men working.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & from(e1,x5) & n_track(x5) & of(x5,x6) & n_rail(x6) & Theme(e1,x4) & Actor(e1,x3) & v_shovel(e1) & n_snow(x4) & (x1 = x3) & at(x1,x2) & n_work(x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_work(e1) & n_man(x1))