premise: Two boys waterskiing.
hypothesis: boys race on waterskies
explanation_1: Boys waterskiing does not mean they are in a race.
premise_logic: exists e1 x1.(Actor(e1,x1) & v_waterskie(e1) & n_boy(x1) & card_eq_2(x1))
hypothesis_logic: exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_watersky(x3) & n_race(x1) & of(x1,x2) & n_boy(x2))
premise_sim: exists e1 x1.(v_waterskie(e1) & n_boy(x1) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists x1 x2 x3.(on(x1,x3) & of(x1,x2) & n_watersky(x3) & n_race(x1) & n_boy(x2) & a_topic(x1))