(S (S (BASENP (PRP It)) (VP (VBZ is) (VP (VBN believed) (SBAR (IN that) (S (BASENP (JJ many) (NNS factors)) (VP (VP (VBD caused) (S (S (BASENP (DT the) (NNP Labor) (NN vote)) (VP (TO to) (VP (VB slump)))) (CC and) (S (BASENP (DT the) (NNP SNP) (NN vote)) (VP (TO to) (VP (VB rise)))))) (COMMA ,) (PP (VBG including) (NP (NP (NP (BASENP (DT the) (NN war)) (PP (IN in) (BASENP (NNP Iraq)))) (CC and) (NP (BASENP (DT the) (NN renewal)) (PP (IN of) (BASENP (NNP Trident))))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (ADJP (BASENP (DT both)) (ADJP (JJ unpopular) (PP (IN in) (BASENP (NNP Scotland)))))))))))))))) (PERIOD .))