( ( While ( ( ( the ( air temperature ) ) ( of ( an ( indoor environment ) ) ) ) ( ( ( is ( normally controlled ) ) and ) ( ( is not ) ( affected ( by ( the ( altitude change ) ) ) ) ) ) ) ) ( , ( ( the ( indoor ( air pressure ) ) ) ( ( ( does change ) ( with ( the altitude ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN While) (S (NP (NP (DT the) (NN air) (NN temperature)) (PP (IN of) (NP (DT an) (JJ indoor) (NN environment)))) (VP (VP (VBZ is) (VP (ADVP (RB normally)) (VBN controlled))) (CC and) (VP (VBZ is) (RB not) (VP (VBN affected) (PP (IN by) (NP (DT the) (NN altitude) (NN change)))))))) (, ,) (NP (DT the) (JJ indoor) (NN air) (NN pressure)) (VP (VBZ does) (NP (NN change)) (PP (IN with) (NP (DT the) (NN altitude)))) (. .)))
While the air temperature of an indoor environment is normally controlled and is not affected by the altitude change, the indoor air pressure does change with the altitude.
(ROOT (S (NP (NNP Air) (NN temperature)) (VP (VBZ changes) (PP (IN as) (NP (NN altitude) (NNS increases)))) (. .)))