(S (S (NP (BASENP (DT The) (NNS directors)) (PP (IN of) (BASENP (NNP Yogyakarta) (CC and) (NNP Solo) (NNS airports)))) (VP (VP (VBP claim) (SBAR (IN that) (S (PP (IN since) (BASENP (DT the) (NN re-audit))) (S (BASENP (PRP they)) (VP (VBP have) (VP (VBN taken) (NP (BASENP (NNS steps)) (SBAR (S (VP (TO to) (VP (VP (VB improve) (BASENP (NN safety))) (CC and) (VP (VB rectify) (BASENP (DT any) (NNS problems)))))))))))))) (CONJP (COMMA ,) (CC but)) (VP (VP (VBP have) (RB not)) (VP (ADVP (RB actually)) (VP (VBN admitted) (SBAR (S (BASENP (PRPD their) (NNS airports)) (VP (VBD were) (ADJP (JJ illegal)))))))))) (PERIOD .))