( ( For example ) ( , ( ( Hydrochloric acid ) ( ( is ( ( a ( water solution ) ) ( of ( ( ( Hydrogen Chloride ) , ) ( ( a gas ) ( at ( room temperature ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN example))) (, ,) (NP (JJ Hydrochloric) (NN acid)) (VP (VBZ is) (NP (NP (DT a) (NN water) (NN solution)) (PP (IN of) (NP (NP (NNP Hydrogen) (NNP Chloride)) (, ,) (NP (NP (DT a) (NN gas)) (PP (IN at) (NP (NN room) (NN temperature)))))))) (. .)))
For example, Hydrochloric acid is a water solution of Hydrogen Chloride, 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)))))) (. .)))