A girl rides a horse.
A girl is riding a horse through a park.
People can ride horses in locations other than the park.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_girl(x1))
exists e1 x1 x2 x3.(through(e1,x3) & n_park(x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_girl(x1))