(S (S (NP (BASENP (NNS Authorities)) (PP (IN in) (BASENP (JJ western) (NNP Kenya)))) (VP (VBP have) (VP (VP (VBN arrested) (BASENP (NN 19) (NNS suspects))) (PP (IN in) (NP (BASENP (NN connection)) (PP (IN with) (NP (BASENP (DT a) (NNS spree)) (PP (IN of) (BASENP (JJ recent) (NN mob) (NNS killings)))))))))) (PERIOD .))