( ( Pure water ) ( ( has ( ( a ( neutral pH ) ) ( of 7 ) ) ) . ) )
(ROOT (S (NP (JJ Pure) (NN water)) (VP (VBZ has) (NP (NP (DT a) (JJ neutral) (NN pH)) (PP (IN of) (NP (CD 7))))) (. .)))
Pure water has a neutral pH of 7.
(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))))))) (. .)))