( ( Of course ) ( , ( ( while ( ( pure water ) ( ( ( has ( ( a pH ) ( of 7 ) ) ) and ) ( ( does n't ) ( conduct ( any electricity ) ) ) ) ) ) ( , ( ( very ( basic solutions ) ) ( have ( ( very high ) pH. ) ) ) ) ) ) )
(ROOT (S (PP (IN Of) (NP (NN course))) (, ,) (SBAR (IN while) (S (NP (JJ pure) (NN water)) (VP (VP (VBZ has) (NP (NP (DT a) (NN pH)) (PP (IN of) (NP (CD 7))))) (CC and) (VP (VBZ does) (RB n't) (VP (VB conduct) (NP (DT any) (NN electricity))))))) (, ,) (NP (RB very) (JJ basic) (NNS solutions)) (VP (VBP have) (NP (ADJP (RB very) (JJ high)) (NN pH.)))))
Of course, while pure water has a pH of 7 and doesn't conduct any electricity, very basic solutions have very high pH.
(ROOT (S (NP (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))