What is the average played value in Belgrade with attendance greater than 26,222?
CREATE TABLE "home_stadiums" (
  "venue" text,
  "city" text,
  "first_international" text,
  "last_international" text,
  "played" real,
  "draw" real,
  "lost" real,
  "average_attendance" real
);
SELECT AVG("played") FROM "home_stadiums" WHERE "city"='belgrade' AND "average_attendance">'26,222';