CREATE TABLE table_23040 ("No." FLOAT, "Country" TEXT, "Local title" TEXT, "Format" TEXT, "Start Date" TEXT, "End Date" TEXT, "Episodes" FLOAT, "Premiere/Air Dates" TEXT)

What was the production format for the series with the local title Fort Boyard: Ultimate Challenge?
SELECT "Format" FROM table_23040 WHERE "Local title" = 'Fort Boyard: Ultimate Challenge'
SELECT "Format" FROM "table_23040" WHERE "Local title" = 'Fort Boyard: Ultimate Challenge'