( ( ( ( ( ( A ( Galvanic cell ) ) -LRB- ) or ) ( voltaic cell ) ) -RRB- ) ( ( is ( ( an ( electrochemical cell ) ) ( that ( ( derives ( electrical energy ) ) ( from ( ( spontaneous ( redox reaction ) ) ( ( taking place ) ( within ( the cell ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ Galvanic) (NN cell)) (-LRB- -LRB-) (CC or) (NP (JJ voltaic) (NN cell)) (-RRB- -RRB-)) (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) (NN reaction)) (VP (VBG taking) (NP (NN place)) (PP (IN within) (NP (DT the) (NN cell))))))))))) (. .)))
A Galvanic cell (or voltaic cell) is an electrochemical cell that derives electrical energy from spontaneous redox reaction 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))))))) (. .)))