( ( Respiratory failure ) ( ( may ( occur ( if ( ( given ( after ( knee jerk ) ) ) ( reflex disappears ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Respiratory) (NN failure)) (VP (MD may) (VP (VB occur) (SBAR (IN if) (S (PP (VBN given) (PP (IN after) (NP (NN knee) (NN jerk)))) (NP (NNP reflex)) (VP (VBZ disappears)))))) (. .)))
Respiratory failure may occur if given after knee jerk reflex disappears.
(ROOT (X (NP (DT The) (`` ``) (JJ knee-jerk) ('' '') (NN motion)) (SBAR (IN that) (S (NP (NNS people)) (ADVP (RB involuntarily)) (VP (VBP perform) (SBAR (IN after) (S (S (VP (VBG being) (VP (VBN struck) (PP (IN in) (NP (NP (DT the) (NN knee)) (PP (IN in) (NP (DT a) (JJ certain) (NN way)))))))) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (DT a) (JJ reflex))))))))))))