Two men are working at a construction site.
Two men are working at the site.
Site  may be some other place other than an construction site.
exists e1 x1 x2 x3.(at(e1,x2) & n_site(x2) & of(x2,x3) & n_construction(x3) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_site(x2) & at(e1,x2) & Actor(e1,x1) & v_work(e1) & n_man(x1) & card_eq_2(x1))