( ( ( ( ( ( Acids ( and ( Bases Students ) ) ) ( measure ( ( the pH ) ( of ( ( acids , ) bases ) ) ) ) ) , ) and ) ( ( ( neutral substances ) ( Listening ( to ( Water Students ) ) ) ) ( listen ( to ( ( an ( audio tape ) ) ( of ( ( the ( many sounds ) ) ( of water ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Acids) (CC and) (NNPS Bases) (NNS Students)) (VP (VB measure) (NP (NP (DT the) (NN pH)) (PP (IN of) (NP (NP (NNS acids)) (, ,) (NP (NNS bases))))))) (, ,) (CC and) (S (NP (NP (JJ neutral) (NNS substances)) (VP (VBG Listening) (PP (TO to) (NP (NNP Water) (NNS Students))))) (VP (VBP listen) (PP (TO to) (NP (NP (DT an) (JJ audio) (NN tape)) (PP (IN of) (NP (NP (DT the) (JJ many) (NNS sounds)) (PP (IN of) (NP (NN water))))))))) (. .)))
Acids and Bases Students measure the pH of acids, bases, and neutral substances Listening to Water Students listen to an audio tape of the many sounds of water.
(ROOT (S (NP (PRP You)) (VP (VBP call) (S (NP (NP (DT a) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (RB not) (NP (NP (DT an) (NN acid)) (CC or) (NP (DT a) (NN base))))))) (ADJP (JJ neutral)))) (. .)))