(S (S (BASENP (DT A) (JJ memorial) (NN service)) (VP (MD will) (VP (VB be) (VP (VBN held) (PP (IN on) (NP (BASENP (DT a) (NN date)) (SBAR (WHNP (WDT that)) (S (VP (VBZ has) (VP (ADVP (RB yet)) (VP (TO to) (VP (VB be) (VP (VBN announced)))))))))))))) (PERIOD .))