4 men digging a hole while working on a road.
The men are putting in a sign on the road.
If the men are digging a hole they wouldn't be putting in a sign yet.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & while(e1,e2) & on(e2,x4) & n_road(x4) & Actor(e2,x2) & v_work(e2) & Theme(e1,x3) & Actor(e1,x2) & v_dig(e1) & n_hole(x3) & (x1 = x2) & n_man(x1) & n_date(x1) & a_date_day_04(x1) & a_date_day_04(x1))
exists e1 x1 x2 x3 x4.(n_road(x4) & n_man(x1) & in(e1,x3) & on(x3,x4) & n_sign(x3) & Theme(e1,x2) & Actor(e1,x1) & v_put(e1) & n_thing(x2))