( Vikane ( ( is ( ( a gas ) ( at ( room temperature ) ) ) ) . ) )
(ROOT (S (NP (NNP Vikane)) (VP (VBZ is) (NP (NP (DT a) (NN gas)) (PP (IN at) (NP (NN room) (NN temperature))))) (. .)))
Vikane is a gas at room temperature.
(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)))))) (. .)))