( ( To ( be ( more precise ) ) ) ( , ( this ( ( is ( elastic ( potential energy ) ) ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB be) (ADJP (RBR more) (JJ precise))))) (, ,) (NP (DT this)) (VP (VBZ is) (NP (JJ elastic) (JJ potential) (NN energy))) (. .)))
To be more precise, this is 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)))))))))) (. .)))