( Subject ( ( matter ( wherein ( ( the ( stated ingredient ) ) ( is ( ( a gas ) ( at ( normal ( room ( ( temperature and ) pressure ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Subject)) (VP (NN matter) (SBAR (WHADVP (WRB wherein)) (S (NP (DT the) (VBN stated) (NN ingredient)) (VP (VBZ is) (NP (NP (DT a) (NN gas)) (PP (IN at) (NP (JJ normal) (NN room) (NN temperature) (CC and) (NN pressure)))))))) (. .)))
Subject matter wherein the stated ingredient is a gas at normal room temperature and pressure.
(ROOT (S (NP (NNP Hydrogen)) (VP (VBZ is) (PP (IN in) (NP (NP (NN gas) (NN form)) (PP (IN at) (NP (NN room) (NN temperature)))))) (. .)))