user: Question: When is the first broadcast for episodes where Rufus's guest is Jack Whitehall?
Columns: ['Episode', 'First broadcast', 'Rufus guest', 'Marcus guest', 'Winner']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['3x01', '2 February 2010', 'Johnny Vegas', 'Chris Addison', 'Blue (4–0)']
SQL:

assistant: SELECT "First broadcast" FROM "Table" WHERE "Rufus guest" = 'Jack Whitehall';