( ( ( The ices ) ( that ( make ( ( the bulk ) ( of ( a comet ) ) ) ) ) ) ( ( ( include ( ( ( ( ( ( ( ( ( water ice ) , ) ( ( dry ice ) ( -LRB- ( ( solid ( carbon dioxide ) ) -RRB- ) ) ) ) , ) ( frozen ammonia ) ) , ) ( solid methane ) ) and ) ( several ( common ( atmospheric gases ) ) ) ) ) ( in ( ( solid form ) ( such ( as oxygen ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS ices)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (NP (NP (DT the) (NN bulk)) (PP (IN of) (NP (DT a) (NN comet)))))))) (VP (VBP include) (NP (NP (NN water) (NN ice)) (, ,) (NP (NP (JJ dry) (NN ice)) (PRN (-LRB- -LRB-) (NP (JJ solid) (NN carbon) (NN dioxide)) (-RRB- -RRB-))) (, ,) (NP (JJ frozen) (NN ammonia)) (, ,) (NP (JJ solid) (NN methane)) (CC and) (NP (JJ several) (JJ common) (JJ atmospheric) (NNS gases))) (PP (IN in) (NP (NP (JJ solid) (NN form)) (PP (JJ such) (IN as) (NP (NN oxygen)))))) (. .)))
The ices that make the bulk of a comet include water ice, dry ice (solid carbon dioxide), frozen ammonia, solid methane and several common atmospheric gases in solid form such as oxygen.
(ROOT (S (NP (NNP Ice)) (VP (VBZ is) (NP (NP (DT the) (JJ common) (NN term)) (PP (IN for) (NP (NP (NN water)) (PP (IN in) (NP (PRP$ its) (JJ solid) (NN state))))))) (. .)))