( ( At ( the ( same time ) ) ) ( , ( ( ( ( ( ( the use ) ( of ( renewable ( energy sources ) ) ) ) , ) ( such ( as ( ( ( wind power ) and ) ( solar energy ) ) ) ) ) , ) ( ( has ( ( ( grown rapidly ) , ) ( helping ( to ( reduce ( greenhouse ( gas emissions ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (JJ same) (NN time))) (, ,) (NP (NP (DT the) (NN use)) (PP (IN of) (NP (JJ renewable) (NN energy) (NNS sources))) (, ,) (PP (JJ such) (IN as) (NP (NP (NN wind) (NN power)) (CC and) (NP (JJ solar) (NN energy)))) (, ,)) (VP (VBZ has) (VP (VBN grown) (ADVP (RB rapidly)) (, ,) (S (VP (VBG helping) (S (VP (TO to) (VP (VB reduce) (NP (NN greenhouse) (NN gas) (NNS emissions))))))))) (. .)))
At the same time, the use of renewable energy sources, such as wind power and solar energy, has grown rapidly, helping to reduce greenhouse gas emissions.
(ROOT (S (NP (JJ Renewable) (NN energy) (NNS sources)) (VP (VBP emit) (NP (NP (JJR fewer)) (CC or) (NP (DT no) (NN greenhouse) (NNS gases)))) (. .)))