premise: Two boys waterskiing.
hypothesis: boys waterski
explanation_1: waterski is a form of waterskiing.
premise_logic: exists e1 x1.(Actor(e1,x1) & v_waterskie(e1) & n_boy(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_waterski(e1) & n_boy(x1))
premise_sim: exists e1 x1.(v_waterskie(e1) & n_boy(x1) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_waterski(e1) & n_boy(x1) & Actor(e1,x1))