(S (S (PP (VBG According) (PP (TO to) (BASENP (JJ Russian) (NNS officials)))) (COMMA ,) (S (NP (NP (BASENP (DT an) (NNP Aeroflot-Nord)) (COMMA ,) (BASENP (NN Flight) (NN 821))) (COMMA ,) (BASENP (DT a) (NNP Boeing) (NN 737-500))) (VP (VP (VP (VBD crashed) (PP (IN near) (NP (BASENP (DT the) (NN city)) (PP (IN of) (BASENP (NNP Perm)))))) (PP (IN at) (NP (BASENP (NN 3:15) (NN a.m.)) (BASENP (JJ local) (NN time))))) (PP (IN with) (NP (NP (BASENP (NN 88) (NNS people)) (ADVP (RB aboard))) (COMMA ,) (NP (BASENP (DT all)) (VP (VBN feared) (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN killed))))))))))))) (PERIOD .))