( ( ( The ( 4 states ) ) ( of matter ) ) ( ( ( ( are solid ) , ) ( liquid ( , ( gas ( , ( and plasma ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (CD 4) (NNS states)) (PP (IN of) (NP (NN matter)))) (VP (VBP are) (ADJP (JJ solid)) (, ,) (NP (NN liquid) (, ,) (NN gas) (, ,) (CC and) (NN plasma))) (. .)))
The 4 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)))) (. .)))