( ( ( ( ( ( Strains ( of ( this species ) ) ) ( appear ( able ( to ( produce ( ethanol ( , ( acetate ( , ( carbon dioxide ) ) ) ) ) ) ) ) ) ) , ) and ) ( ( ( hydrogen gas ) ( by ( fermentation ( of ( ( ( ( ( cellulose , ) ( polygalacturonic acid ) ) , ) and ) ( other compounds ) ) ) ) ) ) ( common ( in ( plant biomass ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NNS Strains)) (PP (IN of) (NP (DT this) (NN species)))) (VP (VBP appear) (ADJP (JJ able) (S (VP (TO to) (VP (VB produce) (NP (NN ethanol) (, ,) (NN acetate) (, ,) (NN carbon) (NN dioxide)))))))) (, ,) (CC and) (S (NP (NP (NN hydrogen) (NN gas)) (PP (IN by) (NP (NP (NN fermentation)) (PP (IN of) (NP (NP (NN cellulose)) (, ,) (NP (JJ polygalacturonic) (NN acid)) (, ,) (CC and) (NP (JJ other) (NNS compounds))))))) (ADJP (JJ common) (PP (IN in) (NP (NN plant) (NNS biomass))))) (. .)))
Strains of this species appear able to produce ethanol, acetate, carbon dioxide, and hydrogen gas by fermentation of cellulose, polygalacturonic acid, and other compounds common in plant biomass.
(ROOT (S (NP (NNP Cellulose)) (VP (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (ADJP (RBS most) (JJ common)) (JJ biochemical) (NNS compounds)) (PP (IN on) (NP (NN earth))))))) (CC and) (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (DT all) (NNS plants)))))) (. .)))