Two construction workers are working.
Two construction workers are working for their boss.
If someone is working, they are working for their boss.
exists e1 x1 x2.(Actor(e1,x1) & v_work(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2 x3.(for(e1,x3) & n_boss(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x1) & v_work(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))