premise: An enthusiastic boy pushes a shopping cart containing a smiling boy.
hypothesis: Two boys are helping their parents shop
explanation_1: There is no indication that the boys are helping at their parents shop.
explanation_2: Just because a boy is pushing a cart with a boy in it does not mean he is helping their parents shop.
explanation_3: There is no mention in sentence 1 of the boys having living parents or that they are helping them shop as opposed to shopping for themselves.
premise_logic: exists e2 e1 e3 s1 x1 x2 x3 x4 x5.(Theme(e3,x2) & Actor(e3,x1) & v_push(e3) & Theme(e2,x5) & Actor(e2,x4) & v_contain(e2) & n_boy(x5) & Actor(e1,x5) & v_smile(e1) & (x2 = x4) & n_cart(x2) & of(x2,x3) & n_shopping(x3) & n_boy(x1) & a_enthusiastic(s1) & Theme(s1,x1))
hypothesis_logic: exists e2 e1 x1 x2 x3.(Actor(e2,x1) & v_shop(e2) & Theme(e1,x3) & Actor(e1,x2) & v_help(e1) & n_parent(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_boy(x1) & card_eq_2(x1))
premise_sim: exists e2 e1 e3 s1 x1 x2 x3 x4 x5.(v_smile(e1) & v_push(e3) & v_contain(e2) & of(x2,x3) & n_shopping(x3) & n_cart(x2) & n_boy(x5) & n_boy(x1) & a_enthusiastic(s1) & Theme(s1,x1) & Theme(e3,x2) & Theme(e2,x5) & Actor(e3,x1) & Actor(e2,x4) & Actor(e1,x5) & (x2 = x4))
hypothesis_sim: exists e2 e1 x1 x2 x3.(v_shop(e2) & v_help(e1) & of(x3,x1) & n_thing(x1) & n_parent(x3) & n_boy(x1) & card_eq_2(x1) & Theme(e1,x3) & Actor(e2,x1) & Actor(e1,x2) & (x1 = x2))