( ( Potential energy ) ( ( is ( the ( same ( ( as stored ) energy ) ) ) ) . ) )
(ROOT (S (NP (JJ Potential) (NN energy)) (VP (VBZ is) (NP (DT the) (JJ same) (ADJP (RB as) (JJ stored)) (NN energy))) (. .)))
Potential energy is the same as stored energy.
(ROOT (S (NP (NP (NNP Energy)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN stored) (PP (IN in) (NP (DT a) (NN person) (CC or) (NN object)))))))) (VP (VBZ is) (VP (VBN called) (NP (JJ potential) (NN energy)))) (. .)))