( ( cerebellum ( ( The portion ) ( of ( ( the brain ) ( in ( ( the back ) ( of ( ( the head ) ( between ( ( ( the cerebrum ) and ) ( the ( brain stem ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB cerebellum) (NP (NP (DT The) (NN portion)) (PP (IN of) (NP (NP (DT the) (NN brain)) (PP (IN in) (NP (NP (DT the) (NN back)) (PP (IN of) (NP (NP (DT the) (NN head)) (PP (IN between) (NP (NP (DT the) (NN cerebrum)) (CC and) (NP (DT the) (NN brain) (NN stem)))))))))))) (. .)))
cerebellum The portion of the brain in the back of the head between the cerebrum and the brain stem.
(ROOT (S (NP (NP (DT The) (NN cerebellum)) (PP (IN of) (NP (DT the) (NN brain)))) (VP (VBZ lies) (PP (PP (IN under) (NP (DT the) (NN cerebrum))) (CC and) (PP (IN behind) (NP (DT the) (NN brain) (NN stem))))) (. .)))