(S (S (ADVP (RB Previously)) (COMMA ,) (S (BASENP (DT the) (NN event)) (VP (VP (VBD was) (VP (VP (VBN held) (PP (IN in) (BASENP (NNP Portugal)))) (CC and) (VP (PP (IN in) (BASENP (NNP Maastricht))) (PP (IN in) (BASENP (NN 2007)))))) (CC and) (VP (MD will) (VP (VP (VBN held) (PP (IN in) (BASENP (NNP Spain)))) (BASENP (JJ next) (NN year))))))) (PERIOD .))