(S (S (PP (IN In) (BASENP (NNP March))) (COMMA ,) (S (NP (BASENP (NNP Slovenian) (NNP Prime) (NNP Minister) (NNP Borut) (NNP Pahor) (POS 's)) (BASENP (JJ centre-left) (NN government))) (VP (VBD yielded) (PP (TO to) (NP (BASENP (NNS demands)) (PP (IN for) (NP (BASENP (DT a) (NN referendum)) (PP (IN on) (SBAR (IN whether) (S (VP (TO to) (VP (VB accept) (BASENP (DT a) (NN border) (NN deal)))))))))))))) (PERIOD .))