( ( ( ( ( ( A ( galvanic cell ) ) , ) or ) ( ( ( voltaic cell ) , ) ( ( named ( after ( ( ( ( Luigi Galvani ) , ) or ) ( Alessandro Volta ) ) ) ) respectively ) ) ) , ) ( ( is ( ( an ( electrochemical cell ) ) ( that ( ( derives ( electrical energy ) ) ( from ( ( spontaneous ( redox reactions ) ) ( ( taking place ) ( within ( the cell ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ galvanic) (NN cell)) (, ,) (CC or) (NP (NP (JJ voltaic) (NN cell)) (, ,) (VP (VBN named) (PP (IN after) (NP (NP (NNP Luigi) (NNP Galvani)) (, ,) (CC or) (NP (NNP Alessandro) (NNP Volta)))) (ADVP (RB respectively)))) (, ,)) (VP (VBZ is) (NP (NP (DT an) (JJ electrochemical) (NN cell)) (SBAR (WHNP (WDT that)) (S (VP (VBZ derives) (NP (JJ electrical) (NN energy)) (PP (IN from) (NP (NP (JJ spontaneous) (NN redox) (NNS reactions)) (VP (VBG taking) (NP (NN place)) (PP (IN within) (NP (DT the) (NN cell))))))))))) (. .)))
A galvanic cell, or voltaic cell, named after Luigi Galvani, or Alessandro Volta respectively, is an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.
(ROOT (S (NP (DT A) (JJ voltaic) (NN cell)) (VP (VBZ generates) (NP (DT an) (JJ electric) (NN current)) (PP (IN through) (NP (NP (DT a) (NN reaction)) (VP (VBN known) (PP (IN as) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (JJ spontaneous) (NN redox))))))) (. .)))