( ( ( Compounds and ) ( ( Mixtures All ) ( of matter ) ) ) ( ( can ( be ( classified ( as ( ( ( either mixtures ) or ) ( pure substances ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Compounds)) (CC and) (NP (NP (NNP Mixtures) (NNP All)) (PP (IN of) (NP (NN matter))))) (VP (MD can) (VP (VB be) (VP (VBN classified) (PP (IN as) (NP (NP (DT either) (NNS mixtures)) (CC or) (NP (JJ pure) (NNS substances))))))) (. .)))
Compounds and Mixtures All of matter can be classified as either mixtures or pure substances.
(ROOT (S (NP (NNS Elements)) (VP (VBP are) (NP (NP (JJ pure) (NNS substances)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (ADVP (RB up) (DT all) (NN matter))))))) (. .)))