( ( Calculate ( elastic ( potential ( elastic ( potential energy ) ) ) ) ) . )
(ROOT (S (VP (VB Calculate) (NP (JJ elastic) (JJ potential) (JJ elastic) (JJ potential) (NN energy))) (. .)))
Calculate elastic potential 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)))))))))) (. .)))