is a heavyweight film that fights a good fight on behalf of the world 's endangered reefs 
(ROOT (VP (VBZ is) (NP (NP (DT a) (NN heavyweight) (NN film)) (SBAR (WHNP (WDT that)) (S (VP (VBZ fights) (NP (DT a) (JJ good) (NN fight)) (PP (IN on) (NP (NP (NN behalf)) (PP (IN of) (NP (NP (DT the) (NN world) (POS 's)) (JJ endangered) (NNS reefs)))))))))))
(ROOT (VP (VBZ ) (NP (NP (DT ) (NN ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NP (NN )) (PP (IN ) (NP (NP (DT ) (NN ) (POS )) (JJ ) (NNS )))))))))))