Question: What is the sum of the golds of the nation with 5 total and less than 0 bronze medals?
SQL: SELECT SUM("Gold") FROM "2-15972223-1" WHERE "Total" = 5.0 AND "Bronze" < 0.0;

Question: What is the sum of the gold medals of the total nation, which has more than 19 silver medals?
SQL: SELECT SUM("Gold") FROM "2-15972223-1" WHERE "Nation" = 'total' AND "Silver" > 19.0;

Question: What is the average number of silver medals of the nation with 3 bronzes and more than 4 total medals?
SQL: SELECT AVG("Silver") FROM "2-15972223-1" WHERE "Bronze" = 3.0 AND "Total" > 4.0;