( ( Brain concussion ) ( ( is ( ( the ( ( most common ) injury ) ) ( to ( ( the brain ) ( following ( a ( cranial blow ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Brain) (NNP concussion)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN injury)) (PP (TO to) (NP (NP (DT the) (NN brain)) (PP (VBG following) (NP (DT a) (JJ cranial) (NN blow))))))) (. .)))
Brain concussion is the most common injury to the brain following a cranial blow.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN concussion)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (NN type)) (PP (IN of) (NP (NN brain) (NN injury))))) (. .)))