Two police riding horses in the city.
The animals are on the beach.
The city can't be on the beach at the same time.
exists e1 x1 x2 x3.(n_city(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_police(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_beach(x2) & n_animal(x1) & on(x1,x2))