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("Class" CLOB, "Type" CLOB, "Fleet numbers" CLOB, "Quantity made" FLOAT, "Manufacturer" CLOB, "Date made" CLOB, "Date withdrawn" CLOB)

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'