Two police riding horses in the city.
The police officers have equestrian training.
The police do not necessarily have equestrian training, even though they are riding horses in the city.
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 e1 s1 x1 x2 x3.(n_officer(x1) & of(x1,x2) & n_police(x2) & Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & n_training(x3) & a_equestrian(s1) & Theme(s1,x3))