( Biofuels ( ( can ( contribute ( to ( ( an ( energy mix ) ) ( of ( environmentally-sound ( , ( domestic fuels ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Biofuels)) (VP (MD can) (VP (VB contribute) (PP (TO to) (NP (NP (DT an) (NN energy) (NN mix)) (PP (IN of) (NP (JJ environmentally-sound) (, ,) (JJ domestic) (NNS fuels))))))) (. .)))
Biofuels can contribute to an energy mix of environmentally-sound, domestic fuels.
(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)))))))) (. .)))