(S (S (PP (IN In) (BASENP (JJ recent) (NNS weeks))) (COMMA ,) (S (BASENP (NNP Pakistan)) (VP (VBZ has) (VP (VBN seen) (NP (BASENP (NNS attacks)) (PP (IN on) (NP (NP (BASENP (NNS police) (NNS centers)) (COMMA ,) (BASENP (JJ military) (NNS headquarters))) (CC and) (BASENP (DT a) (NNP UN) (NN building))))))))) (PERIOD .))