( ( The tubes ) ( also ( ( ( carry ( sperm ( from ( the testicles ) ) ) ) ( to ( ( ( the ( vas deferens ) ) , ) ( which ( ( carry ( the sperm ) ) ( into ( the urethra ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NNS tubes)) (ADVP (RB also)) (VP (VBP carry) (NP (NP (NN sperm)) (PP (IN from) (NP (DT the) (NNS testicles)))) (PP (TO to) (NP (NP (DT the) (NN vas) (NNS deferens)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP carry) (NP (DT the) (NN sperm)) (PP (IN into) (NP (DT the) (NN urethra))))))))) (. .)))
The tubes also carry sperm from the testicles to the vas deferens, which carry the sperm 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)))))))))))) (. .)))