CREATE TABLE table_9231 ("Club" CLOB, "Location" CLOB, "Manager" CLOB, "Kit maker" CLOB, "Shirt sponsor" CLOB)

Ron Jans is a manager of which kit maker?
SELECT "Kit maker" FROM table_9231 WHERE "Manager" = 'ron jans'
SELECT "Kit maker" FROM "table_9231" WHERE "Manager" = 'ron jans'