CREATE TABLE table_9961 ("Rank" TEXT, "Nation" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

How many Gold for the Nation in Rank 15 with 0 Silver?
SELECT MAX("Gold") FROM table_9961 WHERE "Rank" = '15' AND "Silver" > '0'
SELECT MAX("Gold") FROM "table_9961" WHERE "Rank" = '15' AND "Silver" > '0'