(S (S (NP (NP (NP (BASENP (NN 15) (JJ big) (NNS cities)) (CC and) (BASENP (NN five) (NNS areas))) (PP (IN of) (BASENP (JJ Moscow) (NNS suburbs)))) (COMMA ,) (NP (BASENP (DT some) (NNS areas)) (PP (IN of) (NP (NP (DT the) (BASENP (NNP Tula) (CC and) (NNP Kaluga))) (NNS areas))))) (VP (VBD were) (VP (VBN left) (PP (IN without) (BASENP (NN electricity)))))) (PERIOD .))