Who is the partner facing the opponents florian Mayer & alexander waske in the final?
CREATE TABLE "doubles_titles_5" (
  "date" text,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score" text
);
SELECT "partner" FROM "doubles_titles_5" WHERE "opponents_in_the_final"='florian mayer & alexander waske';