( He ( ( noted ( that ( ( ( the volume ) ( of ( a gas ) ) ) ( increased ( with ( the temperature ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD noted) (SBAR (IN that) (S (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (DT a) (NN gas)))) (VP (VBD increased) (PP (IN with) (NP (DT the) (NN temperature))))))) (. .)))
He noted that the volume of a gas increased with the temperature.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (NN temperature) (NNS increases)) (PP (CC but) (NP (NP (NN amount)) (PP (IN of) (NP (NP (NN gas)) (CC and) (NP (PRP$ its) (NN pressure))))))) (VP (VBP are) (ADJP (JJ constantvolume))))) (NP (NNS increases)) (VP (VBZ happens) (PP (TO to) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (DT the) (NN gas)))))) (. .)))