Seven men dressed in orange safety hats work on railroad tracks.
A group of men are working.
Seven men comprise a group, orange colored safety hats are a universal signal for men at work, especially near railroad tracks. Therefore, they are working.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7.(on(e2,x6) & n_track(x6) & of(x6,x7) & n_railroad(x7) & Actor(e2,x1) & v_work(e2) & in(e1,x3) & n_hat(x3) & of(x3,x5) & n_safety(x5) & of(x3,x4) & n_orange(x4) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1) & card_eq_7(x1))
exists e1 x1 x2.(Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_man(x2) & n_group(x1))