How many silver medals does Belarus (blr) along with 4 gold and 4 bronze?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("silver") FROM "medal_table" WHERE "gold"=4 AND "nation"='belarus (blr)' AND "bronze">4;