premise: A man sitting on an empty train
hypothesis: A man is on a bus
explanation_1: A man can not be sitting on a empty train and a bus at the same time.
premise_logic: exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_train(x3) & a_empty(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists p1 x1.(exists x2.(on(x1,x2) & n_bus(x2)) & n_man(x1))
premise_sim: exists e1 s1 x1 x2 x3.(v_sit(e1) & on(e1,x3) & n_train(x3) & n_man(x1) & a_topic(x1) & a_empty(s1) & Theme(s1,x3) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists x1.(n_man(x1) & exists x2.(on(x1,x2) & n_bus(x2)))