( ( ( ( ( Such babies ) ( have ( no ( ( cerebrum or ) cerebellum ) ) ) ) but ) ( they ( do ( have ( ( a brain ) stem ) ) ) ) ) . )
(ROOT (S (S (NP (JJ Such) (NNS babies)) (VP (VBP have) (NP (DT no) (NN cerebrum) (CC or) (NN cerebellum)))) (CC but) (S (NP (PRP they)) (VP (VBP do) (VP (VB have) (S (NP (DT a) (NN brain)) (VP (VB stem)))))) (. .)))
Such babies have no cerebrum or cerebellum but they do have a 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))))) (. .)))