( ( Arc lamps ) ( ( come ( in ( ( ( ( nearly all ) ( of ( the ( noble ( gas types ) ) ) ) ) , ) ( including ( ( xenon ( , ( krypton ( , ( argon ( , ( neon ( , ( and ( helium , ) ) ) ) ) ) ) ) ) ) ( which ( all ( emit ( ( spectral lines ) ( that ( are ( very ( specific ( to ( the gas ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Arc) (NNS lamps)) (VP (VBP come) (PP (IN in) (NP (NP (QP (RB nearly) (DT all))) (PP (IN of) (NP (DT the) (JJ noble) (NN gas) (NNS types))) (, ,) (PP (VBG including) (NP (NP (NN xenon) (, ,) (NN krypton) (, ,) (NN argon) (, ,) (NN neon) (, ,) (CC and) (NN helium) (, ,)) (SBAR (WHNP (WDT which)) (S (NP (DT all)) (VP (VBP emit) (NP (NP (JJ spectral) (NNS lines)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (RB very) (JJ specific) (PP (TO to) (NP (DT the) (NN gas)))))))))))))))) (. .)))
Arc lamps come in nearly all of the noble gas types, including xenon, krypton, argon, neon, and helium, which all emit spectral lines that are very specific to the gas.
(ROOT (S (NP (NNP Neon)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (JJ noble) (NN gas))))) (. .)))