premise: A boy is outside jumping over a flower bush on a skateboard.
hypothesis: a boy on his bike
explanation_1: One cannot be on a bike and skateboard simultaneously.
explanation_2: The boy cannot be on his bike if he is jumping over a flower bush on a skateboard
explanation_3: A boy on a skateboard cannot be on his bike same time.
premise_logic: exists e1 s1 x1 x2 x3 x4.(for(s1,e1) & on(e1,x4) & n_skateboard(x4) & over(e1,x2) & n_bush(x2) & of(x2,x3) & n_flower(x3) & Actor(e1,x1) & v_jump(e1) & Theme(s1,x1) & a_outside(s1) & n_boy(x1))
hypothesis_logic: exists x1 x2.(a_topic(x1) & on(x1,x2) & n_bike(x2) & of(x2,x1) & n_male(x1) & n_boy(x1))