( ( C CHINOOK ) ( ( WIND ( ( A ( warm ( , ( dry wind ) ) ) ) ( that ( descends ( ( the ( eastern slopes ) ) ( of ( the ( Rocky mountains ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP C) (NNP CHINOOK)) (VP (VBD WIND) (NP (NP (DT A) (JJ warm) (, ,) (JJ dry) (NN wind)) (SBAR (WHNP (WDT that)) (S (VP (VBZ descends) (NP (NP (DT the) (JJ eastern) (NNS slopes)) (PP (IN of) (NP (DT the) (NNP Rocky) (NNS mountains))))))))) (. .)))
C CHINOOK WIND A warm, dry wind that descends the eastern slopes of the Rocky mountains.
(ROOT (S (NP (NN Chinook) (NNS winds)) (VP (VBP occur) (SBAR (WHADVP (WRB when)) (S (NP (NN air)) (VP (VBZ is) (VP (VBN forced) (PP (IN over) (NP (DT a) (NN mountain) (NN range)))))))) (. .)))