( ( Pure water ) ( ( has ( ( a pH ) ( of ( ( 7 , ) ( which ( is ( considered neutral ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Pure) (NN water)) (VP (VBZ has) (NP (NP (DT a) (NN pH)) (PP (IN of) (NP (NP (CD 7)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN considered) (S (ADJP (JJ neutral))))))))))) (. .)))
Pure water has a pH of 7, which is considered neutral.
(ROOT (S (NP (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))