Name the first broadcast for tina malone and joe wilkinson
CREATE TABLE "series_15" (
  "episode" text,
  "first_broadcast" text,
  "seans_team" text,
  "jons_team" text,
  "scores" text
);
SELECT "first_broadcast" FROM "series_15" WHERE "seans_team"='Tina Malone and Joe Wilkinson';