( ( The researchers ) ( ( ( can also ) ( alter ( ( the atmosphere ) ( of ( the ( chamber ( to ( include ( ( ( ( inert ( noble gases ) ) ( like argon ) ) or ) ( ( ( neon ( , ( hydrogen ( , ( nitrogen ( or ( forming gas ) ) ) ) ) ) ) -- ) ( ( ( 5 ( percent hydrogen ) ) and ) ( 95 ( percent nitrogen ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS researchers)) (VP (MD can) (ADVP (RB also)) (VP (VB alter) (NP (NP (DT the) (NN atmosphere)) (PP (IN of) (NP (DT the) (NN chamber) (S (VP (TO to) (VP (VB include) (NP (NP (NP (JJ inert) (JJ noble) (NNS gases)) (PP (IN like) (NP (NNP argon)))) (CC or) (NP (NP (NN neon) (, ,) (NN hydrogen) (, ,) (NN nitrogen) (CC or) (NN forming) (NN gas)) (: --) (NP (NP (CD 5) (NN percent) (NN hydrogen)) (CC and) (NP (CD 95) (NN percent) (NN nitrogen))))))))))))) (. .)))
The researchers can also alter the atmosphere of the chamber to include inert noble gases like argon or neon, hydrogen, nitrogen or forming gas -- 5 percent hydrogen and 95 percent nitrogen.
(ROOT (S (NP (NNP Neon)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (JJ noble) (NN gas))))) (. .)))