( testis ( ( epididymis ( ductus ( deferens ( urethra 6 ) ) ) ) . ) )
(ROOT (S (NP (NNS testis)) (VP (VBZ epididymis) (SBAR (S (NP (NNS ductus)) (VP (VBZ deferens) (NP (QP (CD urethra) (CD 6))))))) (. .)))
testis epididymis ductus deferens urethra 6 .
(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)))))))))))) (. .)))