cagney 's ` top of the world ' 
(ROOT (NP (NP (NP (NNP cagney) (POS 's)) (`` `) (NN top)) (PP (IN of) (NP (DT the) (NN world))) ('' ')))
(ROOT (NP (NP (NP (NNP ) (POS )) (`` ) (NN )) (PP (IN ) (NP (DT ) (NN ))) ('' )))