( ( ( ( ( A ( renewable ( energy source ) ) ) , ) ( renewable ' ) ) , ) ( ( ( ( renewable , ) renewable ) ( ( energy '' ) ( What ( are ( ( energy sources ) ( such ( as ( ( coal ( , ( oil ( , ( and gas ) ) ) ) ) called ) ) ) ) ) ) ) ) ? ) )
(ROOT (S (NP (NP (DT A) (JJ renewable) (NN energy) (NN source)) (, ,) (NP (NN renewable) (POS ')) (, ,)) (VP (VBP renewable) (, ,) (VBP renewable) (NP (NP (NN energy)) ('' '') (SBAR (WHNP (WP What)) (S (VP (VBP are) (NP (NP (NN energy) (NNS sources)) (PP (JJ such) (IN as) (NP (NP (NN coal) (, ,) (NN oil) (, ,) (CC and) (NN gas)) (VP (VBN called)))))))))) (. ?)))
A renewable energy source,renewable',renewable,renewable energy&quot; What are energy sources such as coal, oil, and gas called?
(ROOT (S (S (NP (NNP Coal)) (VP (VBZ is) (ADJP (JJ nonrenewable)))) (, ,) (CC and) (S (NP (DT the) (NN sun)) (VP (VBZ is) (ADJP (JJ renewable) (SBAR (S (VP (VBZ is) (SBAR (WHADVP (WRB how)) (S (NP (NP (NN coal)) (CC and) (NP (DT the) (NN sun))) (VP (VBP compare) (PP (IN as) (NP (NP (NNS sources)) (PP (IN of) (NP (NN energy)))))))))))))) (. .)))