Question: How many Gold medals for the Nations with 6 or more Bronze medals and 18 or more Silver?
SQL: SELECT AVG("Gold") FROM "2-18567469-4" WHERE "Bronze" > 6.0 AND "Silver" > 18.0;

Question: How many Gold medals did the Soviet Union receive?
SQL: SELECT AVG("Gold") FROM "2-18567469-4" WHERE "Nation" = 'Soviet Union';