(S (S (BASENP (JJ Pakistani) (NN intelligence) (NNS officials)) (VP (VBP believe) (SBAR (S (BASENP (DT the) (NNS attacks)) (VP (VBP are) (NP (BASENP (DT a) (NN reaction)) (PP (TO to) (NP (NP (BASENP (DT the) (NN military) (POS 's)) (NNS raids)) (PP (IN on) (BASENP (NNP South) (NNP Waziristan))))))))))) (PERIOD .))