metropolis is a feast for the eyes . 
(ROOT (S (NP (NN metropolis)) (VP (VBZ is) (NP (NP (DT a) (NN feast)) (PP (IN for) (NP (DT the) (NNS eyes))))) (. .)))
(ROOT (S (NP (NN )) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NNS ))))) (. )))