Seven men dressed in orange safety hats work on railroad tracks.
The men are building new tracks.
Sentence 1 is missing building new tracks
exists e1 e2 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 s1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_track(x2) & a_new(s1) & Theme(s1,x2))