(S (S (S (BASENP (NNP Litvinenko)) (VP (VBD was) (NP (BASENP (DT a) (JJ strong) (NN critic)) (PP (IN of) (BASENP (NNP Russian) (NNP President) (NNP Vladimir) (NNP Putin)))))) (CC and) (S (SBAR (ADVP (RB shortly)) (SBAR (IN before) (S (BASENP (PRP he)) (VP (VP (VP (VBD died) (PP (IN in) (BASENP (NNP London)))) (PP (IN from) (BASENP (NN radiation) (NN poisoning)))) (PP (IN in) (BASENP (JJ late) (NNP November))))))) (COMMA ,) (S (BASENP (NNP Litvinenko)) (VP (VP (VBD accused) (BASENP (NNP Putin))) (PP (IN of) (S (VP (VBG ordering) (BASENP (PRPD his) (NN assassination))))))))) (PERIOD .))