What is the sum of the gold medals for the nation of Great britain who had more than 8 silvers and a total of less than 61 medals?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("gold") FROM "medal_table" WHERE "silver">8 AND "nation"='great britain' AND "total"<61;