(S (S (NP (BASENP (NNP Croatia) (POS 's)) (NP (JJ ruling) (NP (NP (BASENP (NNP Democratic) (NNP Union)) (PRN (LRB -LRB-) (BASENP (NNP HDZ)) (RRB -RRB-))) (NN party)))) (VP (VP (VBD expelled) (BASENP (DT the) (JJ former) (NN prime) (NN minister) (NNP Ivo) (NNP Sanader))) (PP (VBG following) (NP (BASENP (PRPD his) (JJ political) (NN comeback)) (BASENP (NNP Sunday)))))) (PERIOD .))