achieves its emotional power and moments of revelation with restraint and a delicate ambiguity . 
(ROOT (S (VP (VBZ achieves) (NP (PRP$ its) (NML (NML (JJ emotional) (NN power)) (CC and) (NML (NML (NNS moments)) (PP (IN of) (NP (NN revelation)))))) (PP (IN with) (NP (NP (NN restraint)) (CC and) (NP (DT a) (JJ delicate) (NN ambiguity))))) (. .)))
(ROOT (S (VP (VBZ ) (NP (PRP$ ) (NML (NML (JJ ) (NN )) (CC ) (NML (NML (NNS )) (PP (IN ) (NP (NN )))))) (PP (IN ) (NP (NP (NN )) (CC ) (NP (DT ) (JJ ) (NN ))))) (. )))