user: Question: What kind of Guest Host has a Episode Number of 7?
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 "Guest Host" FROM "Table" WHERE "Episode Number" = 7.0;