( ( The skull ) ( ( is ( ( the ( bony skeleton ) ) ( of ( ( the head ) ( that ( consists ( of ( ( the cranium ) ( which ( surrounds ( ( ( the brain ) and ) ( the ( facial skeleton ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN skull)) (VP (VBZ is) (NP (NP (DT the) (JJ bony) (NN skeleton)) (PP (IN of) (NP (NP (DT the) (NN head)) (SBAR (WHNP (WDT that)) (S (VP (VBZ consists) (PP (IN of) (NP (NP (DT the) (NN cranium)) (SBAR (WHNP (WDT which)) (S (VP (VBZ surrounds) (NP (NP (DT the) (NN brain)) (CC and) (NP (DT the) (JJ facial) (NN skeleton))))))))))))))) (. .)))
The skull is the bony skeleton of the head that consists of the cranium which surrounds the brain and the facial skeleton.
(ROOT (S (NP (NP (NNP Cranium)) (PRN (-LRB- -LRB-) (NP (NN skull)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (JJ skeletal) (NN structure)) (PP (IN of) (NP (NP (DT the) (NN head)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ supports) (NP (DT the) (NN face))) (CC and) (VP (VBZ protects) (NP (DT the) (NN brain)))))))))))) (. .)))