premise: A man in a blue helmet jumping off of a hill on a dirt bike.
hypothesis: The man is skateboarding in a park.
explanation_1: The man cannot simultaneously be skateboarding and be on a bike
explanation_2: One cannot skateboard and ride a bike at the same time.
explanation_3: A bike isn't a skateboarding.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x2) & of(e1,x4) & on(x4,x5) & n_bike(x5) & of(x5,x6) & n_dirt(x6) & n_hill(x4) & r_off(e1) & Actor(e1,x3) & v_jump(e1) & (x2 = x3) & n_helmet(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(n_man(x1) & in(e1,x2) & n_park(x2) & Actor(e1,x1) & v_skateboard(e1))
premise_sim: exists e1 s1 x1 x2 x3 x4 x5 x6.(v_jump(e1) & r_off(e1) & on(x4,x5) & of(x5,x6) & of(e1,x4) & n_man(x1) & n_hill(x4) & n_helmet(x2) & n_dirt(x6) & n_bike(x5) & in(x1,x2) & a_topic(x1) & a_blue(s1) & Theme(s1,x2) & Actor(e1,x3) & (x2 = x3))
hypothesis_sim: exists e1 x1 x2.(v_skateboard(e1) & n_park(x2) & n_man(x1) & in(e1,x2) & Actor(e1,x1))