a tour de force of modern cinema . 
(ROOT (NP (NP (DT a) (NN tour) (NNP de) (NN force)) (PP (IN of) (NP (JJ modern) (NN cinema))) (. .)))
(ROOT (NP (NP (DT ) (NN ) (NNP ) (NN )) (PP (IN ) (NP (JJ ) (NN ))) (. )))