(S (S (NP (NP (NP (BASENP (DT The) (NN failure)) (PP (IN in) (BASENP (DT the) (JJ accumulative) (NN power) (NN supply) (NN system)))) (PP (IN in) (BASENP (NNP Mosenergo)))) (SBAR (WHNP (WDT which)) (S (VP (VP (VBD occurred) (PP (IN at) (NP (BASENP (NN 11:15) (NN a.m.)) (BASENP (JJ local) (NN time))))) (PP (IN on) (BASENP (NNP Wednesday))))))) (COMMA ,) (VP (VP (VBD led) (PP (TO to) (BASENP (DT a) (NN power) (NN outage)))) (PP (IN in) (NP (BASENP (DT all) (NNS areas)) (PP (IN of) (BASENP (DT the) (NN city))))))) (PERIOD .))