(SINV (SINV (QT (DQL ``) (QTC (S (BASENP (PRP We)) (VP (VP (VBP are) (RB not)) (PP (IN in) (NP (BASENP (DT a) (NN position)) (S (VP (TO to) (VP (VB discuss) (SBAR (WHNP (WP who)) (S (VP (VP (VP (MD may)) (CC or) (VP (MD may) (RB not))) (VP (VB be) (ADJP (JJ responsible) (PP (IN at) (BASENP (DT this) (NN stage))))))))))))))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (BASENP (NNS police)))) (PERIOD .))