( ( though ( it ( can ( be ( ( changed ( from ( one form ) ) ) ( to another ) ) ) ) ) ) ( , ( energy ( ( can ( be ( neither ( ( created nor ) destroyed ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN though) (S (NP (PRP it)) (VP (MD can) (VP (VB be) (VP (VBN changed) (PP (IN from) (NP (CD one) (NN form))) (PP (TO to) (NP (DT another)))))))) (, ,) (NP (NN energy)) (VP (MD can) (VP (VB be) (VP (RB neither) (VBN created) (CC nor) (VBN destroyed)))) (. .)))
though it can be changed from one form to another, energy can be neither created nor destroyed.
(ROOT (S (NP (NNP Energy) (PRP it)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN destroyed)))) (. .)))