( 7 ( ( ( ( ( is exactly ) ( ( the middle ) ( of ( the ( pH scale ) ) ) ) ) and ) ( indicates ( neutral water ) ) ) . ) )
(ROOT (S (NP (CD 7)) (VP (VP (VBZ is) (ADVP (RB exactly)) (NP (NP (DT the) (NN middle)) (PP (IN of) (NP (DT the) (NN pH) (NN scale))))) (CC and) (VP (VBZ indicates) (NP (JJ neutral) (NN water)))) (. .)))
7 is exactly the middle of the pH scale and indicates neutral water.
(ROOT (S (NP (NNP Water)) (VP (VBZ is) (PP (IN at) (NP (NP (DT the) (NN neutrality)) (, ,) (NP (NP (CD 7) (NN point)) (PP (IN on) (NP (DT the) (NN ph) (NN scale))))))) (. .)))