premise: Two boys play in the sand
hypothesis:  Two boys play in the sand box.
explanation_1: The boys are playing in a sand box, therefore playing with sand.
premise_logic: exists e1 x1 x2.(n_sand(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_box(x2) & of(x2,x3) & n_sand(x3) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & card_eq_2(x1))
premise_sim: exists e1 x1 x2.(v_play(e1) & n_sand(x2) & n_boy(x1) & in(e1,x2) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3.(v_play(e1) & of(x2,x3) & n_sand(x3) & n_boy(x1) & n_box(x2) & in(e1,x2) & card_eq_2(x1) & Actor(e1,x1))