What team had less than 291 total points whole having 76 bronze and over 21 gold?
CREATE TABLE "top_ten_medals" (
  "rank" real,
  "province" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("silver") FROM "top_ten_medals" WHERE "gold">21 AND "bronze"=76 AND "total"<291;