( Cellulase ( ( is ( ( ( ( used ( in ( ( the fermentation ) ( of biomass ) ) ) ) ( into biofuels ) ) , ) ( although ( ( this process ) ( is ( relatively ( experimental ( at present ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cellulase)) (VP (VBZ is) (VP (VBN used) (PP (IN in) (NP (NP (DT the) (NN fermentation)) (PP (IN of) (NP (NNS biomass))))) (PP (IN into) (NP (NNS biofuels))) (, ,) (SBAR (IN although) (S (NP (DT this) (NN process)) (VP (VBZ is) (ADJP (RB relatively) (JJ experimental) (PP (IN at) (ADJP (JJ present))))))))) (. .)))
Cellulase is used in the fermentation of biomass into biofuels, although this process is relatively experimental at present.
(ROOT (S (NP (NNS Biomass)) (VP (MD can) (ADVP (RB also)) (VP (VB be) (VP (VBN processed) (S (VP (TO to) (VP (VB make) (ADJP (JJ biofuel)))))))) (. .)))