(S (S (NP (NAC (BASENP (DT The) (NNP UK) (NNP Secretary)) (PP (IN of) (NP (BASENP (NNP State)) (PP (IN for) (BASENP (NNP Defense)))))) (BASENP (NNP John) (NNP Reid))) (VP (VBZ has) (VP (VBN admitted) (SBAR (S (NP (NP (BASENP (DT the) (NN withdrawal)) (PP (IN of) (NP (BASENP (NN 5,500)) (PP (IN of) (NP (BASENP (DT the) (NN 8,500) (JJ British) (NNS troops)) (PP (IN in) (BASENP (NNP Iraq)))))))) (PP (IN by) (BASENP (NN spring) (NN 2006)))) (VP (VBZ is) (BASENP (DT a) (NN possibility)))))))) (PERIOD .))