Four people are riding horses on the beach.
Two equestrians groom their horses.
four people are not two
exists e1 x1 x2 x3.(n_beach(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_people(x1) & card_eq_4(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_groom(e1) & n_horse(x2) & of(x2,x1) & n_thing(x1) & n_equestrian(x1) & card_eq_2(x1))