( This ( ( is ( ( brain damage ) ( to ( ( the ( white matter ) ) ( in ( the brain ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (NP (NP (NN brain) (NN damage)) (PP (TO to) (NP (NP (DT the) (JJ white) (NN matter)) (PP (IN in) (NP (DT the) (NN brain))))))) (. .)))
This is brain damage to the white matter in the brain.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (DT the) (JJ gray) (NN matter)))) (VP (VBZ is) (PP (IN on) (NP (NP (DT the) (NN surface)) (PP (IN of) (NP (DT the) (NN brain))))) (, ,) (S (VP (VBG surrounding) (NP (JJ white) (NN matter))))) (. .)))