( ( Cancer ( of ( the prostate ) ) ) ( ( has ( become ( ( the ( ( most common ) cancer ) ) ( in ( American males ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Cancer)) (PP (IN of) (NP (DT the) (NN prostate)))) (VP (VBZ has) (VP (VBN become) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN cancer)) (PP (IN in) (NP (JJ American) (NNS males)))))) (. .)))
Cancer of the prostate has become the most common cancer in American males.
(ROOT (S (NP (NNP Prostate)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN type)) (PP (IN of) (NP (NP (NN cancer)) (PP (IN in) (NP (JJ adult) (NNS males))))))) (. .)))