( ( ( The states ) ( of matter ) ) ( ( are ( solid ( , ( liquid ( , ( ( gas and ) plasma ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS states)) (PP (IN of) (NP (NN matter)))) (VP (VBP are) (NP (JJ solid) (, ,) (NN liquid) (, ,) (NN gas) (CC and) (NN plasma))) (. .)))
The states of matter are solid, liquid, gas and 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)))) (. .)))