What is the sum of silver values that have bronze values under 4, golds over 2, and a rank of 3?
CREATE TABLE "medal_table" (
  "rank" text,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("silver") FROM "medal_table" WHERE "bronze"<4 AND "rank"='3' AND "gold">2;