( ( The vestibule ) ( ( is ( ( a ( small part ) ) ( of ( ( the ( inner ear ) ) ( adjoining ( ( ( the cochlea ) , ) ( which ( is ( ( the ( hearing part ) ) ( of ( the ( inner ear ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN vestibule)) (VP (VBZ is) (NP (NP (DT a) (JJ small) (NN part)) (PP (IN of) (NP (NP (DT the) (JJ inner) (NN ear)) (VP (VBG adjoining) (NP (NP (DT the) (NN cochlea)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT the) (NN hearing) (NN part)) (PP (IN of) (NP (DT the) (JJ inner) (NN ear))))))))))))) (. .)))
The vestibule is a small part of the inner ear adjoining the cochlea, which is the hearing part of the inner ear.
(ROOT (S (NP (DT The) (NN cochlea) (CC and) (NN vestibul)) (VP (VBP make) (PRT (RP up)) (NP (DT the) (JJ inner) (NN ear))) (. .)))