( ( in ( ( surgery ( of ( ( ( ( ( ( the pharynx ) , ) larynx ) , ) or ) ( bronchial tree ) ) ) ) ( unless ( ( adequate ( muscle relaxants ) ) ( are used ) ) ) ) ) ; )
(ROOT (PP (IN in) (NP (NP (NN surgery)) (PP (IN of) (NP (NP (DT the) (NN pharynx)) (, ,) (NP (NN larynx)) (, ,) (CC or) (NP (JJ bronchial) (NN tree)))) (SBAR (IN unless) (S (NP (JJ adequate) (NN muscle) (NNS relaxants)) (VP (VBP are) (VP (VBN used)))))) (: ;)))
in surgery of the pharynx, larynx, or bronchial tree unless adequate muscle relaxants are used;
(ROOT (S (NP (NNP Jaws) (CC and) (NN pharynx) (NNS muscles)) (VP (VBP are) (VP (VBN used) (S (VP (TO to) (VP (VB pump) (NP (NN water)) (PP (IN over) (NP (DT the) (NNS gills)))))))) (. .)))