(QT (DQL ``) (QTC (S (CC But) (S (BASENP (PRP we)) (VP (VP (MD ca) (RB n't)) (VP (VB lose) (NP (BASENP (NN sight)) (PP (IN of) (SBAR (WHNP (WP what)) (S (BASENP (PRPD our) (JJ central) (NN mission)) (VP (VBZ is)))))))))) (PERIOD .)) (DQR ''))