( We ( ( ( ( measure ( ( the pH ) ( of ( a solution ) ) ) ) experimentally ) ( in ( two ways ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VB measure) (NP (NP (DT the) (NN pH)) (PP (IN of) (NP (DT a) (NN solution)))) (ADVP (RB experimentally)) (PP (IN in) (NP (CD two) (NNS ways)))) (. .)))
We measure the pH of a solution experimentally in two ways.
(ROOT (S (NP (NP (DT The) (NN acidity)) (PP (IN of) (NP (DT a) (NN solution)))) (VP (VBZ is) (ADVP (RB typically)) (VP (VBN assessed) (ADVP (RB experimentally)) (PP (IN by) (NP (NP (NN measurement)) (PP (IN of) (NP (PRP$ its) (NN ph.)))))))))