( Electric ( ( ( Potential ( -LRB- ( ( relate ( voltage ( to ( ( ( ( ( charges , ) ( electric field ) ) , ) and ) energy ) ) ) ) -RRB- ) ) ) 3 ) . ) )
(ROOT (S (NP (NNP Electric)) (VP (VBZ Potential) (PRN (-LRB- -LRB-) (S (VP (VB relate) (ADJP (JJ voltage) (PP (TO to) (NP (NP (NNS charges)) (, ,) (NP (JJ electric) (NN field)) (, ,) (CC and) (NP (NN energy))))))) (-RRB- -RRB-)) (NP (CD 3))) (. .)))
Electric Potential ( relate voltage to charges, electric field, and energy ) 3.
(ROOT (S (NP (NNP Voltage)) (VP (VP (VBZ is) (RB not) (NP (NP (DT the) (JJ same)) (PP (IN as) (NP (NN energy))))) (, ,) (CC but) (VP (VBZ means) (NP (NP (DT the) (NN energy)) (PP (IN per) (NP (NN unit) (NN charge)))))) (. .)))