( ( If untreated ) ( , ( they ( ( may ( ( ascend ( through ( ( the ( vas deferens ) ) ( -LRB- ( ( sperm tube ) -RRB- ) ) ) ) ) ( to ( ( the ( upper ( reproductive tract ) ) ) ( -LRB- ( ( which ( includes ( ( ( ( ( the ( ( epididymis and ) testes ) ) , ) ( located ( in ( the scrotum ) ) ) ) , ) ( ( where sperm ) ( are produced ) ) ) ) ) -RRB- ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (FRAG (ADJP (JJ untreated)))) (, ,) (NP (PRP they)) (VP (MD may) (VP (VB ascend) (PP (IN through) (NP (NP (DT the) (NN vas) (NNS deferens)) (PRN (-LRB- -LRB-) (NP (NN sperm) (NN tube)) (-RRB- -RRB-)))) (PP (TO to) (NP (NP (DT the) (JJ upper) (JJ reproductive) (NN tract)) (PRN (-LRB- -LRB-) (SBAR (WHNP (WDT which)) (S (VP (VBZ includes) (NP (NP (DT the) (NNS epididymis) (CC and) (NNS testes)) (, ,) (VP (VBN located) (PP (IN in) (NP (DT the) (NN scrotum)))) (, ,) (SBAR (WHNP (WHADVP (WRB where)) (NN sperm)) (S (VP (VBP are) (VP (VBN produced))))))))) (-RRB- -RRB-)))))) (. .)))
If untreated, they may ascend through the vas deferens (sperm tube) to the upper reproductive tract (which includes the epididymis and testes, located in the scrotum, where sperm are produced).
(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)))))))))))) (. .)))