(S (S (S (BASENP (PRP He)) (VP (VBD was) (ADJP (JJ unable) (S (VP (TO to) (VP (VP (VB stand) (PP (IN for) (BASENP (NN re-election)))) (ADVP (RB again)))))))) (SBAR (IN as) (S (NP (BASENP (DT the) (NNP Constitution)) (PP (IN of) (BASENP (NNP Poland)))) (VP (VBZ states) (SBAR (IN that) (S (BASENP (DT the) (JJ Polish) (NN president)) (VP (MD can) (VP (ADVP (RB only)) (VP (VB be) (VP (VBN re-elected) (ADVP (RB once)))))))))))) (PERIOD .))