CREATE TABLE table_12353 ("Rank" TEXT, "Nation" TEXT, "Gold" FLOAT, "Silver" FLOAT, "Bronze" FLOAT, "Total" FLOAT)

What is the highest Bronze, when Nation is 'South Africa', and when Total is less than 20?
SELECT MAX("Bronze") FROM table_12353 WHERE "Nation" = 'south africa' AND "Total" < '20'
SELECT MAX("Bronze") FROM "table_12353" WHERE "Nation" = 'south africa' AND "Total" < '20'