premise: A skateboarder is performing a trick in the air.
hypothesis: The skateboarder has experience riding a skateboard
explanation_1: Experience riding a skateboard is required for performing a trick in the air.
explanation_2: If a skateboarder is performing a trick in the air it follows that he has experience riding a skateboard to do a trick in the air.
explanation_3: Performing a trick implies has experience, and riding a skateboard implies skateboarder.
premise_logic: exists e1 x1 x2 x3.(n_air(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_perform(e1) & n_trick(x2) & n_skateboarder(x1))
hypothesis_logic: exists e1 e2 x1 x2 x3 x4.(n_skateboarder(x1) & Theme(e2,x2) & Actor(e2,x1) & v_have(e2) & Theme(e1,x4) & Actor(e1,x3) & v_ride(e1) & n_skateboard(x4) & (x2 = x3) & n_experience(x2))