( ( ( A solution ) ( with ( pH ( of 7 ) ) ) ) ( ( is ( ( ( ( ( neutral , ) ( ( ( pH values ) higher ) ( than ( 7 ( are basic ) ) ) ) ) and ) ( ( pH values ) lower ) ) ( than ( 7 ( are acidic ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN solution)) (PP (IN with) (NP (NP (NN pH)) (PP (IN of) (NP (CD 7)))))) (VP (VBZ is) (ADJP (ADJP (ADJP (JJ neutral)) (, ,) (ADJP (ADJP (NP (CD pH) (NNS values)) (JJR higher)) (SBAR (IN than) (S (NP (CD 7)) (VP (VBP are) (ADJP (JJ basic)))))) (CC and) (ADJP (NP (CD pH) (NNS values)) (JJR lower))) (SBAR (IN than) (S (NP (CD 7)) (VP (VBP are) (ADJP (JJ acidic))))))) (. .)))
A solution with pH of 7 is neutral, pH values higher than 7 are basic and pH values lower than 7 are acidic.
(ROOT (S (NP (DT The) (NN ph) (NN scale)) (VP (VP (VBZ measures) (NP (NNS acids) (CC and) (NNS bases))) (CC and) (VP (VBZ has) (NP (NP (CD 7)) (PP (IN as) (NP (DT a) (JJ neutral) (NN value)))))) (. .)))
The ph scale measures acids and bases and has 7 as a neutral value.