that returns the martial arts master to top form 
(ROOT (SBAR (WHNP (WDT that)) (S (VP (VBZ returns) (NP (DT the) (NML (JJ martial) (NNS arts)) (NN master)) (PP (IN to) (NP (JJ top) (NN form)))))))
(ROOT (SBAR (WHNP (WDT )) (S (VP (VBZ ) (NP (DT ) (NML (JJ ) (NNS )) (NN )) (PP (IN ) (NP (JJ ) (NN )))))))