(S (S (BASENP (NN Prime) (NN minister) (NNP Baldwin) (NNP Spencer)) (VP (VBZ has) (VP (VBN asked) (PP (IN for) (NP (NP (BASENP (NNP Britain) (POS 's)) (NN help)) (PP (IN during) (BASENP (DT the) (NN investigation)))))))) (PERIOD .))