What's the earliest year that had a category of best supporting actress at the asian film awards?
CREATE TABLE "awards_and_nominations" (
  "year" real,
  "award" text,
  "category" text,
  "nominated_work" text,
  "result" text
);
SELECT MIN("year") FROM "awards_and_nominations" WHERE "category"='best supporting actress' AND "award"='asian film awards';