(QT (DQL ``) (QTC (S (BASENP (PRP We)) (VP (VP (MD can) (RB not)) (VP (VP (VP (VB say) (BASENP (NN anything))) (PP (IN about) (BASENP (DT the) (NN cause)))) (PP (IN at) (BASENP (DT the) (NN moment)))))) (PERIOD .)) (DQR ''))