(S (S (BASENP (DT An) (JJ Australian) (NN air) (NN safety) (NN group)) (VP (VBZ claims) (SBAR (IN that) (S (S (BASENP (NNP Yogyakarta) (NNP International) (NNP Airport)) (VP (VBD was) (VP (VP (VBG opearating) (ADVP (RB illegally))) (PP (IN with) (BASENP (DT no) (NN license)))))) (SBAR (WHADVP (WRB when)) (S (NP (BASENP (NNP Garuda) (NNP Indonesia) (NNP Flight) (NN 200)) (PRN (COMMA ,) (BASENP (DT a) (NNP Boeing) (NN 737)) (COMMA ,))) (VP (VP (VBD crashed) (PP (IN at) (BASENP (DT the) (NN airport)))) (COMMA ,) (S (VP (VBG killing) (NP (BASENP (NN 16) (NNPS Indonesians)) (CC and) (BASENP (NN five) (NNPS Australians)))))))))))) (PERIOD .))