(S (S (QT (DQL ``) (QTC (S (SBAR (IN Until) (S (BASENP (DT the) (JJS highest) (NNS authorities)) (VP (VP (VBP see) (BASENP (NN suicide))) (PP (IN as) (BASENP (DT a) (NN problem)))))) (COMMA ,) (S (BASENP (PRPD our) (JJ joint) (NNS efforts)) (VP (MD will) (VP (VB be) (ADJP (JJ unlikely) (S (VP (TO to) (VP (VB yield) (BASENP (DT any) (NNS results)))))))))) (COMMA ,)) (DQR '')) (S (NP (BASENP (NNP Boris) (NNP Polozhy)) (PP (IN of) (BASENP (BASENP (NNP Moscow) (POS 's)) (NNP Serbsky) (JJ psychiatric) (NN center)))) (VP (VBD said) (BASENP (NN yesterday))))) (PERIOD .))