(S (S (BASENP (NN Rock) (NN group) (NNP U2)) (VP (MD will) (VP (VP (VB play) (NP (BASENP (DT a) (JJ third) (NN date)) (PP (IN at) (NP (BASENP (NNP Dublin) (POS 's)) (BASENP (NNP Croke) (NNP Park)))))) (BASENP (DT this) (NN year))))) (PERIOD .))