( Asthma ( ( is ( ( a condition ) ( ( in which ) ( ( muscles ( of ( the ( air passages ) ) ) ) ( ( ( go ( into spasm ) ) , ) ( ( ( making ( breathing difficult ) ) and ) ( resulting ( in ( a wheeze ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Asthma)) (VP (VBZ is) (NP (NP (DT a) (NN condition)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NP (NNS muscles)) (PP (IN of) (NP (DT the) (NN air) (NNS passages)))) (VP (VBP go) (PP (IN into) (NP (NN spasm))) (, ,) (S (VP (VP (VBG making) (S (VP (VBG breathing) (ADJP (JJ difficult))))) (CC and) (VP (VBG resulting) (PP (IN in) (NP (DT a) (NN wheeze))))))))))) (. .)))
Asthma is a condition in which muscles of the air passages go into spasm, making breathing difficult and resulting in a wheeze.
(ROOT (S (NP (NNP Narrow) (NN air) (NNS passages)) (VP (VBP make) (S (VP (VBG breathing) (ADJP (JJ difficult) (RB due) (S (VP (TO to) (VP (VB respiratory) (NP (NN system) (NN disease))))))))) (. .)))