premise: A girl is riding horseback.
hypothesis: The girl is on a horse.
explanation_1: The girl must be on a horse to ride horseback.
premise_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horseback(x2) & n_girl(x1))
hypothesis_logic: exists p1 x1.(n_girl(x1) & exists x2.(on(x1,x2) & n_horse(x2)))
premise_sim: exists e1 x1 x2.(v_ride(e1) & n_horseback(x2) & n_girl(x1) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists x1.(n_girl(x1) & exists x2.(on(x1,x2) & n_horse(x2)))