(S (S (S (BASENP (DT The) (NN bus)) (VP (VBD was) (VP (VBG carrying) (NP (NN 40) (NP (NP (BASENP (NNP North) (JJ American)) (CC and) (BASENP (JJ European))) (NNS passengers)))))) (SBAR (WHADVP (WRB when)) (S (BASENP (PRP it)) (VP (VBD crashed) (PP (IN in) (BASENP (DT the) (NNP Sinai) (NN peninsula))))))) (PERIOD .))