(S (S (S (BASENP (DT The) (NNP U.S.) (NN government)) (VP (VBD warned) (NP (BASENP (JJ private) (JJ financial) (NNS services)) (SBAR (IN that) (S (BASENP (NNP al) (NNP Qaeda)) (VP (VBZ is) (VP (VBG planning) (NP (BASENP (DT a) (JJ cyber) (NN attack)) (PP (IN on) (BASENP (DT the) (NNP U.S.) (NN stock) (CC and) (NN bank) (NNS accounts))))))))))) (COMMA ,) (S (BASENP (NNS officials)) (VP (VBD said) (PP (IN on) (BASENP (NNP Thursday)))))) (PERIOD .))