CREATE TABLE table_68722 ("Year" TEXT, "Edition" TEXT, "Host city" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What is the lowest VIII Edition Gold with a Silver of 4?
SELECT MIN("Gold") FROM table_68722 WHERE "Silver" = '4' AND "Edition" = 'viii'
SELECT MIN("Gold") FROM "table_68722" WHERE "Edition" = 'viii' AND "Silver" = '4'