(S (S (S (BASENP (DT A) (NN police) (NN officer)) (VP (VBZ has) (VP (VBN been) (VP (VP (VBN killed) (PP (IN in) (NP (BASENP (NNP County) (NNP Armagh)) (COMMA ,) (BASENP (NNP Northern) (NNP Ireland))))) (PP (IN by) (BASENP (NNP Continuity) (NNP IRA) (NNS gunmen))))))) (SBAR (NP (QP (ADJP (DT a) (JJ mere)) (NN 48)) (NNS hours)) (SBAR (IN after) (S (BASENP (NN two) (NNS soldiers)) (VP (VBD were) (VP (VBN killed))))))) (PERIOD .))