( ( ( ( Biofuels , ) ( used ( ( ( as ( gasoline blends ) ) or ) ( as ( neat fuels ) ) ) ) ) , ) ( ( can ( reduce ( ( this source ) ( of pollution ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Biofuels)) (, ,) (VP (VBN used) (PP (PP (IN as) (NP (NN gasoline) (NNS blends))) (CC or) (PP (IN as) (NP (JJ neat) (NNS fuels))))) (, ,)) (VP (MD can) (VP (VB reduce) (NP (NP (DT this) (NN source)) (PP (IN of) (NP (NN pollution)))))) (. .)))
Biofuels, used as gasoline blends or as neat fuels, can reduce this source of pollution.
(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)))))))) (. .)))