(S (S (BASENP (DT The) (NNS officials)) (VP (VBD said) (SBAR (IN that) (S (BASENP (DT the) (NNS attacks)) (VP (VBP are) (VP (VBN aimed) (PP (IN at) (S (VP (VBG destroying) (NP (BASENP (DT the) (NNS databases)) (PP (IN of) (NP (NNP U.S.) (NP (NP (BASENP (NN banking)) (CC and) (BASENP (NN stock) (NN market))) (BASENP (NN web) (NNS sites))))))))))))))) (PERIOD .))