What is the average number of golds for nations with less than 2 silver, named uzbekistan, and less than 4 bronze?
CREATE TABLE "medal_table" (
  "rank" text,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT AVG("gold") FROM "medal_table" WHERE "silver"<2 AND "nation"='uzbekistan' AND "bronze"<4;