( ( Potential energy ) ( ( is ( ( the ( stored energy ) ) ( of ( position ( possessed ( by ( an object ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Potential) (NN energy)) (VP (VBZ is) (NP (NP (DT the) (JJ stored) (NN energy)) (PP (IN of) (NP (NP (NN position)) (VP (VBN possessed) (PP (IN by) (NP (DT an) (NN object)))))))) (. .)))
Potential energy is the stored energy of position possessed by an object.
(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)))) (. .)))