( ( ( The ( water ( gas ( shift reaction ) ) ) ) ( -LRB- ( WGS -RRB- ) ) ) ( is ( ( a ( chemical reaction ) ) ( ( in which ) ( ( carbon monoxide ) ( ( reacts ( with water ) ) ( to ( form ( carbon ( ( dioxide and ) hydrogen ) ) ) ) ) ) ) ) ) )
(ROOT (S (NP (NP (DT The) (NN water) (NN gas) (NN shift) (NN reaction)) (PRN (-LRB- -LRB-) (NP (NNP WGS)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT a) (JJ chemical) (NN reaction)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NN carbon) (NN monoxide)) (VP (VBZ reacts) (PP (IN with) (NP (NN water))) (S (VP (TO to) (VP (VB form) (NP (NN carbon) (NN dioxide) (CC and) (NN hydrogen))))))))))))
The water gas shift reaction (WGS) is a chemical reaction in which carbon monoxide reacts with water to form carbon dioxide and hydrogen
(ROOT (S (NP (NNP Combustion) (NNS reactions)) (VP (VBP involve) (S (NP (NP (DT the) (NN reaction)) (PP (IN of) (NP (NP (DT a) (NN hydrocarbon)) (PP (IN with) (NP (NN oxygen) (NN gas)))))) (VP (TO to) (VP (VB produce) (NP (NN water) (CC and) (NN carbon) (NN dioxide)))))) (. .)))