premise: A boy on a skateboard in midair
hypothesis: The boy is doing a trick.
explanation_1: Just because the boy is in midair does not mean he is doing a trick.
explanation_2: The boy may not be doing a trick
explanation_3: Just because a boy on a skateboard in midair does not mean he is doing a trick.
premise_logic: exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & in(x2,x3) & n_midair(x3) & n_skateboard(x2) & n_boy(x1))
hypothesis_logic: exists e1 x1 x2.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2))