( ( When ( you ( light ( a matchstick ) ) ) ) ( , ( you ( ( convert ( ( the ( chemical energy ) ) ( in ( the ( matchstick ( to ( ( ( heat ( ( energy . ) ( This ( matchstick ( when ( ( ( brought ( in contact ) ) ( with ( the candle ) ) ) ( ( ( converts ( ( the chemical ) en ) ) ... ) ergy ) ) ) ) ) ) ) ( in ( the candle ) ) ) ( to ( heat ( and ( light energy ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (PRP you)) (VP (VB light) (NP (DT a) (NN matchstick))))) (, ,) (NP (PRP you)) (VP (VBP convert) (NP (NP (DT the) (JJ chemical) (NN energy)) (PP (IN in) (NP (DT the) (NN matchstick) (S (VP (TO to) (VP (VB heat) (NP (NP (NNP energy) (. .)) (SBAR (S (NP (DT This)) (VP (VBP matchstick) (SBAR (WHADVP (WRB when)) (S (S (VP (VBN brought) (PP (IN in) (NP (NN contact))) (PP (IN with) (NP (DT the) (NN candle))))) (VP (VBZ converts) (ADVP (NP (DT the) (NN chemical)) (IN en)) (: ...) (ADVP (RB ergy))))))))) (PP (IN in) (NP (DT the) (NN candle))) (PP (TO to) (NP (NN heat) (CC and) (NN light) (NN energy)))))))))) (. .)))
When you light a matchstick, you convert the chemical energy in the matchstick to heat energy. This matchstick when brought in contact with the candle converts the chemical en…ergy in the candle to heat and light energy.
(ROOT (S (S (NP (DT The) (NN energy)) (VP (VBZ transformations) (SBAR (IN that) (S (VP (VBP occur) (SBAR (WHADVP (WRB when)) (S (NP (DT a) (NN candle) (NNS burns)) (VP (VBZ is) (VP (VBN described) (PP (IN by))))))))))) (: :) (S (NP (NP (NN chemical) (NN energy)) (PP (IN from) (NP (DT the) (NN wax)))) (VP (VBZ is) (VP (VBN converted) (PP (IN into) (NP (NN light) (CC and) (NN heat) (NN energy)))))) (. .)))