( ( ( fermentation ( ( The synthesis ) ( of ( ATP ( in ( ( the absence ) ( of oxygen ) ) ) ) ) ) ) ( through glycolysis ) ) . )
(ROOT (S (VP (VB fermentation) (NP (NP (DT The) (NN synthesis)) (PP (IN of) (NP (NP (NNP ATP)) (PP (IN in) (NP (NP (DT the) (NN absence)) (PP (IN of) (NP (NN oxygen)))))))) (PP (IN through) (NP (NNS glycolysis)))) (. .)))
fermentation The synthesis of ATP in the absence of oxygen through glycolysis .
(ROOT (S (NP (NNP Fermentation)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (PP (IN of) (S (VP (VBG making) (NP (NN atp)) (PP (IN without) (NP (NN oxygen)))))))) (. .)))