Two police are on patrol on two horses.
Two police are driving a car.
Horses and car are different.
exists p1 x1.(exists x2 x3.(on(x1,x2) & on(x2,x3) & n_horse(x3) & card_eq_2(x3) & n_patrol(x2)) & n_police(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_car(x2) & n_police(x1) & card_eq_2(x1))