( ( A battery ) ( ( stores ( chemical ( potential energy ) ) ) . ) )
(ROOT (S (NP (DT A) (NN battery)) (VP (VBZ stores) (NP (JJ chemical) (JJ potential) (NN energy))) (. .)))
A battery stores chemical potential energy.
(ROOT (S (NP (NP (DT The) (NN energy)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN stored) (PP (IN in) (NP (NN matter)))))))) (VP (VBZ is) (VP (VBN called) (NP (NN potential)))) (. .)))