( ( If ( ( the pH ) ( is ( low ( ( the solution ) ( is acidic ) ) ) ) ) ) ; )
(ROOT (SBAR (IN If) (S (NP (DT the) (NN pH)) (VP (VBZ is) (ADJP (JJ low) (SBAR (S (NP (DT the) (NN solution)) (VP (VBZ is) (ADJP (JJ acidic)))))))) (: ;)))
If the pH is low the solution is acidic;
(ROOT (S (NP (NNS Acids)) (VP (VBP are) (VP (VBN associated) (PP (IN with) (NP (NP (DT a) (JJ low) (NN number)) (PP (IN on) (NP (DT the) (NN ph) (NN scale))))))) (. .)))