( ( 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 (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))