How many bronzes were won for the country that had a larger than 3 rank and a silver win count above 0?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("bronze") FROM "medal_table" WHERE "rank">3 AND "silver">0;