( Biomass ( ( is ( ( a ( renewable ( energy resource ) ) ) ( for ( ( power generation ) ( using ( combustion ( , ( ( gasification or ) co-firing ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Biomass)) (VP (VBZ is) (NP (NP (DT a) (JJ renewable) (NN energy) (NN resource)) (PP (IN for) (NP (NP (NN power) (NN generation)) (VP (VBG using) (NP (NN combustion) (, ,) (NN gasification) (CC or) (NN co-firing))))))) (. .)))
Biomass is a renewable energy resource for power generation using combustion, gasification or co-firing.
(ROOT (S (NP (NNS Biomass)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (DT a) (JJ renewable) (NN energy) (NN resource))))) (. .)))
Biomass is an example of a renewable energy resource.