( ( ( The ( potential energy ) ) ( of ( ( a body ) ( by ( virtue ( of ( ( ( it 's ) configuration ) ( -LRB- ( shape -RRB- ) ) ) ) ) ) ) ) ) ( ( is ( called ( ( it 's ) ( elastic ( potential energy ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ potential) (NN energy)) (PP (IN of) (NP (NP (DT a) (NN body)) (PP (IN by) (NP (NP (NN virtue)) (PP (IN of) (NP (NP (NP (PRP it) (POS 's)) (NN configuration)) (PRN (-LRB- -LRB-) (NP (NN shape)) (-RRB- -RRB-))))))))) (VP (VBZ is) (VP (VBN called) (NP (NP (PRP it) (POS 's)) (JJ elastic) (JJ potential) (NN energy)))) (. .)))
The potential energy of a body by virtue of it's configuration ( shape) is called it's elastic potential energy.
(ROOT (S (S (VP (VBG Changing) (NP (NP (DT the) (NN shape)) (PP (IN of) (NP (DT an) (JJ elastic) (NN material)))))) (VP (VBZ gives) (NP (PRP it)) (NP (JJ potential) (NN energy))) (. .)))