CREATE TABLE table_27417 ("Club" TEXT, "Location" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "Manager" TEXT, "Kitmaker" TEXT)

Which stadium is managed by Kari Martonen?
SELECT "Stadium" FROM table_27417 WHERE "Manager" = 'Kari Martonen'
SELECT "Stadium" FROM "table_27417" WHERE "Manager" = 'Kari Martonen'