user: Question: What was the production format for the series with the local title Fort Boyard: Ultimate Challenge?
Columns: ['No.', 'Country', 'Local title', 'Format', 'Start Date', 'End Date', 'Episodes', 'Premiere/Air Dates']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'France', 'Fort Boyard', '1 Team', 'May 30', 'June 3', 7.0, '2 July–20 August 2011']
SQL:

assistant: SELECT "Format" FROM "Table" WHERE "Local title" = 'Fort Boyard: Ultimate Challenge';