premise: Semi-pro martial artist practices his most powerful moves.
hypothesis: The martial artist prepares for his sparring session.
explanation_1: The man may be practicing for any reason, not just prep for a sparring session.
explanation_2: not all moves are sparring
explanation_3: The fact that the martial artist is practicing his most powerful moves does not imply that he is preparing for a sparring session.
premise_logic: (x)
hypothesis_logic: exists e1 s1 s2 x1 x2.(n_session(x2) & a_sparring(s2) & Theme(s2,x2) & of(x2,x1) & n_male(x1) & n_artist(x1) & a_martial(s1) & Theme(s1,x1) & for(e1,x2) & Actor(e1,x1) & v_prepare(e1))