( ( ( ( ( Heart disease ) , ) ( ( ( ( ( ( the ( leading cause ) ) ( of death ) ) ( in ( the ( United States ) ) ) ) , ) and ) ( ( stroke , ) ( ( the ( third ( leading cause ) ) ) ( of death ) ) ) ) ) , ) ( ( continued ( their ( long-term declines ) ) ) . ) )
(ROOT (S (NP (NP (NNP Heart) (NN disease)) (, ,) (NP (NP (NP (DT the) (VBG leading) (NN cause)) (PP (IN of) (NP (NN death))) (PP (IN in) (NP (DT the) (NNP United) (NNPS States)))) (, ,) (CC and) (NP (NP (NN stroke)) (, ,) (NP (NP (DT the) (JJ third) (VBG leading) (NN cause)) (PP (IN of) (NP (NN death)))))) (, ,)) (VP (VBD continued) (NP (PRP$ their) (JJ long-term) (NNS declines))) (. .)))
Heart disease, the leading cause of death in the United States, and stroke, the third leading cause of death, continued their long-term declines.
(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))))) (. .)))