premise: Two boys rollerblading.
hypothesis: The boys are brothers.
explanation_1: Not all boys are brothers.
premise_logic: exists e1 x1.(Actor(e1,x1) & v_rollerblade(e1) & n_boy(x1) & card_eq_2(x1))
hypothesis_logic: exists p1 x1.(n_boy(x1) & exists x2.((x1 = x2) & n_brother(x2)))
premise_sim: exists e1 x1.(v_rollerblade(e1) & n_boy(x1) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists x1.(n_boy(x1) & exists x2.(n_brother(x2) & (x1 = x2)))