What is the lowest amount of medals Russia has if they have more than 2 silver medals and less than 4 gold medals?
CREATE TABLE "medal_table" (
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT MIN("total") FROM "medal_table" WHERE "silver">2 AND "nation"='russia' AND "gold"<4;