How many gold have a Rank of 7, and a Bronze of 1, and a Silver smaller than 0?
CREATE TABLE "medal_table" (
  "rank" real,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT SUM("gold") FROM "medal_table" WHERE "rank"=7 AND "bronze"=1 AND "silver"<0;