( Matter ( ( exists ( as ( either ( ( ( a ( liquid ( , ( solid ( , ( gas , ) ) ) ) ) ) or ) plasma ) ) ) ) . ) )
(ROOT (S (NP (NNP Matter)) (VP (VBZ exists) (PP (IN as) (NP (CC either) (NP (DT a) (JJ liquid) (, ,) (JJ solid) (, ,) (NN gas) (, ,)) (CC or) (NP (NN plasma))))) (. .)))
Matter exists as either a liquid, solid, gas, or plasma.
(ROOT (S (NP (NNP Plasma)) (VP (VBZ completes) (NP (NP (DT the) (NN list)) (: :) (NP (ADJP (ADJP (JJ solid)) (, ,) (ADJP (JJ liquid)) (, ,)) (NN gas)))) (. .)))