premise: The young man is trying to balance on the train tracks.
hypothesis: A young man is trying to balance on the train tracks while riding his bicycle.
explanation_1: One cannot infer that the man is riding a bicycle.
explanation_2: You do not have to be riding a bicycle while trying to balance.
explanation_3: The young man may not be balancing on the train tracks while also riding his bicycle.
premise_logic: exists e1 p1 s1 x1 x2 x3.(n_track(x2) & of(x2,x3) & n_train(x3) & n_man(x1) & a_young(s1) & Theme(s1,x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(on(e2,x2) & Actor(e2,x1) & v_balance(e2)))
hypothesis_logic: exists e1 p1 s1 x1 x2 x3 x4.(n_bicycle(x4) & of(x4,x2) & n_male(x2) & n_track(x2) & of(x2,x3) & n_train(x3) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e3 e2.(while(e2,e3) & Theme(e3,x4) & Actor(e3,x1) & v_ride(e3) & on(e2,x2) & Actor(e2,x1) & v_balance(e2)) & n_man(x1) & a_young(s1) & Theme(s1,x1))