( ( A solid ) ( ( is ( in ( ( ( a state ) ( of matter ) ) ( that ( maintains ( ( ( a ( fixed volume ) ) and ) shape ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ solid)) (VP (VBZ is) (PP (IN in) (NP (NP (DT a) (NN state)) (PP (IN of) (NP (NN matter))) (SBAR (WHNP (WDT that)) (S (VP (VBZ maintains) (NP (NP (DT a) (VBN fixed) (NN volume)) (CC and) (NP (NN shape))))))))) (. .)))
A solid is in a state of matter that maintains a fixed volume and shape.
(ROOT (S (NP (NP (DT A) (JJ definite) (NN shape)) (CC and) (NP (DT a) (JJ definite) (NN volume))) (VP (VBP are) (NP (NP (NNS properties)) (PP (IN of) (NP (NP (NP (DT the) (JJ solid) (, ,) (JJ only) (NN state)) (PRN (-LRB- -LRB-) (PRP s) (-RRB- -RRB-))) (PP (IN of) (NP (NN matter))))))) (. .)))
A definite shape and a definite volume are properties of the solid, only state(s) of matter.