( ( ( Pure water ) ( with ( ( a pH ) ( of 7 ) ) ) ) ( ( ( is actually ) ( ( ( a ( laboratory product ) ) ( rather than ) ) ( a ( natural substance ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Pure) (NN water)) (PP (IN with) (NP (NP (DT a) (NN pH)) (PP (IN of) (NP (CD 7)))))) (VP (VBZ is) (ADVP (RB actually)) (NP (NP (DT a) (NN laboratory) (NN product)) (CONJP (RB rather) (IN than)) (NP (DT a) (JJ natural) (NN substance)))) (. .)))
Pure water with a pH of 7 is actually a laboratory product rather than a natural substance.
(ROOT (S (NP (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))