premise: A man sits on a motorcycle and a woman is on the back.
hypothesis: a man is on a motorcycle
explanation_1: A man is on a motorcycle; he has a woman friend with him on the the back.
premise_logic: exists e1 p1 x1 x2 x3 x4.(n_back(x4) & on(x3,x4) & n_woman(x3) & on(e1,x2) & n_motorcycle(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
hypothesis_logic: exists p1 x1.(exists x2.(on(x1,x2) & n_motorcycle(x2)) & n_man(x1))
premise_sim: exists e1 x1 x2 x3 x4.(v_sit(e1) & on(x3,x4) & on(e1,x2) & n_woman(x3) & n_motorcycle(x2) & n_man(x1) & n_back(x4) & Actor(e1,x1))
hypothesis_sim: exists x1.(n_man(x1) & exists x2.(on(x1,x2) & n_motorcycle(x2)))