(S (S (BASENP (NNP Mitayev)) (VP (VBD cited) (SBAR (IN that) (S (QT (DQL ``) (NP (BASENP (NN stress)) (PP (IN due) (PP (TO to) (BASENP (NN family) (NNS problems))))) (DQR '')) (VP (VBZ is) (SBAR (WHNP (WP what)) (S (VP (VBD led) (PP (TO to) (NP (BASENP (PRPD his) (NNS actions)) (PP (IN against) (BASENP (NNP Popov))))))))))))) (PERIOD .))