( Semen ( ( is ( ( a ( milky ( sperm-carrying fluid ) ) ) ( produced ( by ( ( ( the ( prostate gland ) ) and ) ( the ( seminal vesicles ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Semen)) (VP (VBZ is) (NP (NP (DT a) (JJ milky) (JJ sperm-carrying) (NN fluid)) (VP (VBN produced) (PP (IN by) (NP (NP (DT the) (NN prostate) (NN gland)) (CC and) (NP (DT the) (JJ seminal) (NNS vesicles))))))) (. .)))
Semen is a milky sperm-carrying fluid produced by the prostate gland and the seminal vesicles.
(ROOT (S (NP (DT The) (NN prostate) (NN gland)) (VP (VBZ secretes) (NP (NP (DT a) (NN fluid)) (SBAR (WHNP (WDT that)) (S (VP (VBZ mixes) (PP (IN with) (NP (NN sperm))) (S (VP (TO to) (VP (VB help) (NP (NN form) (NN semen)))))))))) (. .)))