(S (S (BASENP (JJ Pakistani) (NNS officials)) (VP (VBP have) (VP (VBN said) (SBAR (IN that) (S (NP (BASENP (NN five) (NNS attacks)) (PP (IN on) (NP (BASENP (NN government) (NNS sites)) (PP (IN across) (BASENP (DT the) (NN country)))))) (VP (VBP have) (VP (VBN killed) (NP (QP (ADVP (IN at) (JJS least)) (NN forty)) (NNS people))))))))) (PERIOD .))