is a masterpiece of elegant wit and artifice 
(ROOT (VP (VBZ is) (NP (NP (DT a) (NN masterpiece)) (PP (IN of) (NP (JJ elegant) (NN wit) (CC and) (NN artifice))))))
(ROOT (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (JJ ) (NN ) (CC ) (NN ))))))