( Gases ( ( are ( characterized ( as ( having ( ( ( no ( definite shape ) ) or ) ( definite volume ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Gases)) (VP (VBP are) (VP (VBN characterized) (PP (IN as) (S (VP (VBG having) (NP (NP (DT no) (JJ definite) (NN shape)) (CC or) (NP (JJ definite) (NN volume)))))))) (. .)))
Gases are characterized as having no definite shape or definite volume.
(ROOT (S (NP (NP (DT The) (NN gas) (NN form)) (PP (IN of) (NP (NN matter)))) (VP (VBZ has) (NP (NP (ADVP (DT neither)) (DT a) (JJ definite) (NN shape)) (CC nor) (NP (DT a) (JJ definite) (NN volume)))) (. .)))