(QT (DQL ``) (QTC (S (BASENP (DT A) (QT (DQL ``) (JJ no-fly) (DQR '')) (NN match)) (VP (VBZ requires) (S (BASENP (DT the) (NN agent)) (VP (TO to) (VP (VP (VB call) (BASENP (DT a) (NN law) (NN enforcement) (NN officer))) (S (VP (TO to) (VP (VP (VB detain) (CC and) (VB question)) (BASENP (DT the) (NN passenger)))))))))) (PERIOD .)) (DQR ''))