CREATE TABLE table_68986 ("Class" TEXT, "Type" TEXT, "Fleet numbers" TEXT, "Quantity made" FLOAT, "Manufacturer" TEXT, "Date made" TEXT, "Date withdrawn" TEXT)

What Class has a Quantity made of 5?
SELECT "Class" FROM table_68986 WHERE "Quantity made" = '5'
SELECT "Class" FROM "table_68986" WHERE "Quantity made" = '5'