( Cancer ( ( is ( ( ( the ( leading cause ) ) ( of death ) ) ( in ( ( the ( United States ) ) ( ( exceeded only ) ( by ( heart disease ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cancer)) (VP (VBZ is) (NP (NP (DT the) (VBG leading) (NN cause)) (PP (IN of) (NP (NN death))) (PP (IN in) (NP (NP (DT the) (NNP United) (NNPS States)) (VP (VBN exceeded) (ADVP (RB only)) (PP (IN by) (NP (NN heart) (NN disease)))))))) (. .)))
Cancer is the leading cause of death in the United States exceeded only by heart disease.
(ROOT (S (NP (NNP Heart) (NN disease)) (VP (VBZ is) (NP (NP (DT the) (VBG leading) (NN cause)) (PP (IN of) (NP (NN death))) (PP (IN in) (NP (DT the) (VBN united) (NNS states))))) (. .)))