premise: A man is on the back of his friend.
hypothesis: A man is holding his friend.
explanation_1: The man is holding his friend up, using his back.
explanation_2: If he's on the back of his friend he's holding his friend.
explanation_3: As the man is at back ,so she is holding his friend.
premise_logic: exists p1 x1 x2 x3.(n_friend(x3) & of(x3,x2) & n_male(x2) & n_back(x2) & on(x1,x2) & of(x2,x3) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_friend(x2) & of(x2,x1) & n_male(x1) & n_man(x1))
premise_sim: exists x1 x2 x3.(on(x1,x2) & of(x3,x2) & of(x2,x3) & n_man(x1) & n_male(x2) & n_friend(x3) & n_back(x2))
hypothesis_sim: exists e1 x1 x2.(v_hold(e1) & of(x2,x1) & n_man(x1) & n_male(x1) & n_friend(x2) & Theme(e1,x2) & Actor(e1,x1))