(S (S (S (NP (NP (NP (BASENP (DT The) (NN victory)) (PP (IN of) (BASENP (NNP Olympiacos)))) (PP (IN over) (BASENP (NNP AEK)))) (PRN (COMMA ,) (BASENP (NN 3-0)) (COMMA ,))) (VP (VBD angered) (NP (BASENP (DT the) (NNS supporters)) (PP (IN of) (BASENP (NNP AEK)))))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN believed) (S (VP (TO to) (VP (VB be) (NP (BASENP (DT the) (NN catalyst)) (PP (IN for) (NP (BASENP (NN damage)) (PP (IN in) (NP (CC both) (NP (BASENP (DT the) (NN stadium)) (CC and) (BASENP (DT the) (NN ship)))))))))))))))) (PERIOD .))