(S (S (BASENP (JJ Pakistani) (NNS officials)) (VP (VBP have) (VP (VP (VBN blamed) (NP (BASENP (NNS Mehsud) (POS 's)) (NN organization))) (PP (IN for) (NP (NP (BASENP (DT a) (NN series)) (PP (IN of) (NP (BASENP (JJ high) (NN profile) (NNS attacks)) (PP (IN across) (BASENP (DT the) (NN country)))))) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (VP (VP (VBN killed) (NP (QP (ADVP (RBR more) (IN than)) (NN 500)) (NNS people))) (PP (IN since) (NP (BASENP (DT the) (NN beginning)) (PP (IN of) (BASENP (NNP October)))))))))))))) (PERIOD .))