( ( Pure water ) ( ( tends ( to ( be ( neutral ( with ( ( a pH ) ( of ( ( 7 or ) so ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Pure) (NN water)) (VP (VBZ tends) (S (VP (TO to) (VP (VB be) (ADJP (JJ neutral) (PP (IN with) (NP (NP (DT a) (NN pH)) (PP (IN of) (NP (QP (CD 7) (CC or) (RB so))))))))))) (. .)))
Pure water tends to be neutral with a pH of 7 or so.
(ROOT (S (NP (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))