Two police are on patrol on two horses.
Two policemen riding their horses on patrol are looking for a lost boy.
Two police are on patrol on two horses does not indicate that they riding their horses on patrol are looking for a lost boy
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 e3 e2 x1 x2 x3 x4 x5.(for(e2,x5) & n_boy(x5) & Theme(e3,x5) & v_lose(e3) & Actor(e2,x1) & v_look(e2) & on(e1,x4) & n_patrol(x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_horse(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_policeman(x1) & card_eq_2(x1))