( ( The ( prostate gland ) ) ( ( is ( ( a ( male ( reproductive organ ) ) ) ( ( ( whose main ) function ) ( is ( to ( secrete ( ( ( ( prostate fluid ) , ) one ) ( of ( ( the components ) ( of semen ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN prostate) (NN gland)) (VP (VBZ is) (NP (NP (DT a) (JJ male) (JJ reproductive) (NN organ)) (SBAR (WHNP (WP$ whose) (JJ main) (NN function)) (S (VP (VBZ is) (S (VP (TO to) (VP (VB secrete) (NP (NP (NNP prostate) (CD fluid) (, ,) (CD one)) (PP (IN of) (NP (NP (DT the) (NNS components)) (PP (IN of) (NP (NN semen)))))))))))))) (. .)))
The prostate gland is a male reproductive organ whose main function is to secrete prostate fluid, one of the components of semen.
(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)))))))))) (. .)))