premise: A young boy in a cowboy hat rides a large horse.
hypothesis: A boy rides a horse.
explanation_1: A boy rides a horse is an explicit fact, his appearance and the size of the horse are irrelevant.
explanation_2: Young boy is a type of boy, and a large horse is a type of horse.
explanation_3: "Rides a horse" is a rephrasing of "rides a large horse."
premise_logic: exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_horse(x4) & a_large(s2) & Theme(s2,x4) & in(x1,x2) & n_hat(x2) & of(x2,x3) & n_cowboy(x3) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_boy(x1))
premise_sim: exists e1 s1 s2 x1 x2 x3 x4.(v_ride(e1) & of(x2,x3) & n_horse(x4) & n_hat(x2) & n_cowboy(x3) & n_boy(x1) & in(x1,x2) & a_young(s1) & a_large(s2) & Theme(s2,x4) & Theme(s1,x1) & Theme(e1,x4) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_ride(e1) & n_horse(x2) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1))