( ( The bladder ) ( ( is ( ( a ( hollow ( , ( muscular organ ) ) ) ) ( which ( ( ( collects and ) stores ) urine ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN bladder)) (VP (VBZ is) (NP (NP (DT a) (JJ hollow) (, ,) (JJ muscular) (NN organ)) (SBAR (WHNP (WDT which)) (S (VP (VBZ collects) (CC and) (VBZ stores) (NP (NN urine))))))) (. .)))
The bladder is a hollow, muscular organ which collects and stores urine.
(ROOT (S (NP (DT The) (JJ urinary) (NN bladder)) (VP (VBZ is) (NP (NP (DT the) (ADJP (JJ hollow) (CC and) (JJ muscular)) (JJ balloon-shaped) (NN organ)) (SBAR (WHNP (WDT that)) (S (VP (VBZ collects) (NP (NN urine))))))) (. .)))