Two construction workers doing their job.
Two men are building the wall.
They do not say the construction workers are men and they do not tell if they are building a wall.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_do(e1) & n_job(x3) & of(x3,x1) & n_thing(x1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_wall(x2) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_man(x1) & card_eq_2(x1))