( ( ( The higher ) ( the pH ) ) ( , ( ( ( the more ) ( basic ( of ( alkaline ( the solution ) ) ) ) ) . ) ) )
(ROOT (X (X (X (DT The) (JJR higher)) (NP (DT the) (NN pH))) (, ,) (X (X (DT the) (JJR more)) (ADJP (JJ basic) (PP (IN of) (S (VP (VB alkaline) (NP (DT the) (NN solution))))))) (. .)))
The higher the pH, the more basic of alkaline the solution.
(ROOT (S (PP (IN As) (NP (NN ph) (NNS increases))) (, ,) (NP (DT a) (NN solution)) (VP (VBZ becomes) (ADJP (RBR more) (JJ basic))) (. .)))