( ( ( ( The ( pH level ) ) ( of ( pure water ) ) ) ( is 7 ) ) ( , ( ( that ( of ( orange juice ) ) ) ( ( is ( around 3 ) ) . ) ) ) )
(ROOT (S (S (NP (NP (DT The) (NN pH) (NN level)) (PP (IN of) (NP (JJ pure) (NN water)))) (VP (VBZ is) (NP (CD 7)))) (, ,) (NP (NP (DT that)) (PP (IN of) (NP (JJ orange) (NN juice)))) (VP (VBZ is) (NP (QP (RB around) (CD 3)))) (. .)))
The pH level of pure water is 7, that of orange juice is around 3.
(ROOT (S (NP (CD 7)) (VP (VBZ is) (NP (NP (DT the) (NN ph)) (PP (IN of) (NP (JJ pure) (NN water))))) (. .)))