( ( ( ( conservation ( of energy ) ) ( -LRB- ( ( ( Newton 's ) law ) -RRB- ) ) ) ( ( The principle ) ( that ( energy ( ( can not ) ( be ( ( ( ( created or ) destroyed ) , ) ( although ( it ( can ( be ( ( changed ( from ( one form ) ) ) ( to another ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NP (NN conservation)) (PP (IN of) (NP (NN energy))) (PRN (-LRB- -LRB-) (NP (NP (NNP Newton) (POS 's)) (NN law)) (-RRB- -RRB-))) (NP (NP (DT The) (NN principle)) (SBAR (IN that) (S (NP (NN energy)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN created) (CC or) (VBN destroyed) (, ,) (SBAR (IN although) (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)))))))))))))) (. .)))
conservation of energy (Newton's law) The principle that energy cannot be created or destroyed, although it can be changed from one form to another.
(ROOT (S (S (PP (VBG According) (PP (TO to) (NP (NP (DT the) (NN law)) (PP (IN of) (NP (NP (NN conservation)) (PP (IN of) (NP (NN energy)))))))) (, ,) (NP (NN energy)) (VP (MD can) (ADVP (RB never)) (ADVP (RB actually)) (VP (VB be) (`` ``) (VP (VBN consumed)))) ('' '')) (: ;) (S (NP (PRP it)) (VP (MD can) (ADVP (RB only)) (VP (VB be) (VP (VBN changed) (PP (IN from) (NP (CD one) (NN form))) (PP (TO to) (NP (DT another))))))) (. .)))