premise: Boy on a skateboard in midair at a skate park
hypothesis: A boy skateboarding.
explanation_1: Boy on a skateboard is a boy skateboarding.
explanation_2: Answer: The boy is skateboarding in a skate park.
explanation_3: Boy on a skateboard is a rephrasing of boy skateboarding.
premise_logic: exists s1 x1 x2 x3 x4.(ne_nam_boy(s1) & a_topic(s1) & on(s1,x1) & in(x1,x2) & at(x2,x3) & n_park(x3) & of(x3,x4) & n_skate(x4) & n_midair(x2) & n_skateboard(x1))
hypothesis_logic: exists x1 x2.(a_topic(x1) & n_skateboarding(x1) & of(x1,x2) & n_boy(x2))