( ( For example ) ( , ( ( a ( molecular gas ) ) ( ( ( ( ( ( dissociates , ) or ) separates ) , ) ( gradually ( into ( ( ( an ( atomic gas ) ) ( -LRB- ( ( known ( as ( an ( ( ( inert or ) noble ) gas ) ) ) ) -RRB- ) ) ) ( if ( ( ( the ( thermal energy ) ) ( of ( some particles ) ) ) ( exceeds ( the ( molecular ( binding energy ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (NP (DT a) (JJ molecular) (NN gas)) (VP (VP (VBZ dissociates)) (, ,) (CC or) (VP (VBZ separates)) (, ,) (PP (ADVP (RB gradually)) (IN into) (NP (NP (DT an) (JJ atomic) (NN gas)) (PRN (-LRB- -LRB-) (VP (VBN known) (PP (IN as) (NP (DT an) (ADJP (JJ inert) (CC or) (JJ noble)) (NN gas)))) (-RRB- -RRB-)) (SBAR (IN if) (S (NP (NP (DT the) (JJ thermal) (NN energy)) (PP (IN of) (NP (DT some) (NNS particles)))) (VP (VBZ exceeds) (NP (DT the) (JJ molecular) (VBG binding) (NN energy)))))))) (. .)))
For example, a molecular gas dissociates, or separates, gradually into an atomic gas (known as an inert or noble gas) if the thermal energy of some particles exceeds the molecular binding energy.
(ROOT (S (NP (NNP Neon)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (JJ noble) (NN gas))))) (. .)))