(S (S (BASENP (NNS Officials)) (VP (VBP say) (SBAR (IN that) (S (BASENP (DT the) (NN arrest)) (VP (QT (DQL ``) (VP (VBD dealt) (BASENP (DT a) (JJ severe) (NN blow))) (DQR '')) (PP (TO to) (NP (BASENP (NNP al-Qaeda)) (PP (IN in) (BASENP (NNP Iraq)))))))))) (PERIOD .))