user: ### NOW ANSWER:
Question: What kind of Episode Number has a Air Date on 29 June 2007?
Columns: ['Episode Number', 'Air Date', 'Guest Host', 'Musical Guest (Song performed)', '"Coat of Cash" Wearing Celebrity']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1 June 2007', 'David Walliams', 'Mutya Buena ( Real Girl )', 'Pete Bennett']
SQL:

assistant: SELECT AVG("Episode Number") FROM "Table" WHERE "Air Date" = '29 June 2007';