premise: Man standing on a tricycle riding in front of a crowd.
hypothesis: A woman is pushing a bicycle.
explanation_1: A man is different from a woman.Tricycle and bicycle are different.
explanation_2: The subject can either be a man on a tricycle or a woman pushing a bicycle, but both cannot be true simultaneously.
explanation_3: A man and a woman belong to different genders.
premise_logic: exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(x1,x3) & in(x3,x5) & of(x5,x6) & n_crowd(x6) & n_front(x5) & n_riding(x3) & of(x3,x4) & n_tricycle(x4) & n_standing(x1) & of(x1,x2) & n_man(x2))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_push(e1) & n_bicycle(x2) & n_woman(x1))