of an energetic , extreme-sports adventure 
(ROOT (PP (IN of) (NP (DT an) (JJ energetic) (, ,) (NML (JJ extreme) (HYPH -) (NNS sports)) (NN adventure))))
(ROOT (PP (IN ) (NP (DT ) (JJ ) (, ) (NML (JJ ) (HYPH ) (NNS )) (NN ))))