( ( where ( Ue ( is ( the ( elastic ( potential energy ) ) ) ) ) ) . )
(ROOT (FRAG (SBAR (WHADVP (WRB where)) (S (NP (NNP Ue)) (VP (VBZ is) (NP (DT the) (JJ elastic) (JJ potential) (NN energy))))) (. .)))
where Ue is the elastic potential energy.
(ROOT (S (NP (DT The) (ADJP (NN term) (JJ elastic)) (JJ potential) (NN energy)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB describe) (S (NP (JJ potential) (NN energy)) (ADJP (JJ due) (PP (TO to) (NP (NP (DT an) (NN object) (POS 's)) (NN shape)))))))))) (. .)))