(S (S (BASENP (PRP He)) (VP (VBD promised) (SBAR (IN that) (S (SBAR (IN if) (S (BASENP (DT the) (NNP UK) (NN government)) (VP (VBD went) (ADVP (RB ahead) (PP (IN with) (BASENP (DT the) (NNP Trident) (NN project))))))) (COMMA ,) (S (BASENP (DT the) (NNP SNP)) (VP (MD would) (VP (VB propose) (S (VP (TO to) (VP (VP (VB use) (BASENP (DT those) (NNS powers))) (S (VP (TO to) (VP (VB stop) (S (BASENP (PRP it)) (VP (VBG proceeding) (PP (IN in) (BASENP (NNP Scotland)))))))))))))))))) (PERIOD .))