( ( The ( vas deferens ) ) ( ( is ( ( the tube ) ( that ( ( ( ( ( ( connects ( to ( the epididymis ) ) ) and ) carries ) ( the ( sperm cells ) ) ) ( from ( ( the testes ) ( up ( ( past ( the ( seminal vesicles ) ) ) then ) ) ) ) ) ( into ( ( the center ) ( of ( ( the prostate ) ( where ( it ( empties ( into ( the urethra ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN vas) (NNS deferens)) (VP (VBZ is) (NP (NP (DT the) (NN tube)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ connects) (PP (TO to) (NP (DT the) (NNS epididymis)))) (CC and) (VP (VBZ carries)) (NP (DT the) (NN sperm) (NNS cells)) (PP (IN from) (NP (NP (DT the) (NNS testes)) (ADVP (RB up) (PP (IN past) (NP (DT the) (JJ seminal) (NNS vesicles)) (ADVP (RB then)))))) (PP (IN into) (NP (NP (DT the) (NN center)) (PP (IN of) (NP (NP (DT the) (NN prostate)) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ empties) (PP (IN into) (NP (DT the) (NN urethra))))))))))))))) (. .)))
The vas deferens is the tube that connects to the epididymis and carries the sperm cells from the testes up past the seminal vesicles then into the center of the prostate where it empties into the urethra.
(ROOT (S (NP (DT A) (NN vas) (NNS deferens)) (VP (VBZ is) (NP (NP (DT the) (NN name)) (PP (IN of) (NP (NP (DT the) (NN tube)) (SBAR (WHNP (WDT that)) (S (VP (VBZ carries) (NP (NN sperm)) (PP (IN from) (NP (NP (DT the) (NNS epididymis)) (PP (TO to) (NP (DT the) (NN urethra)))))))))))) (. .)))