user: Question: When David O'Doherty and Katherine Parkinson are both on the davids team when is the first broadcast?
Columns: ['Episode', 'First broadcast', 'Davids team', 'Lees team', 'Scores']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['5x01', '9 September 2011', 'Rebecca Front and Jack Whitehall', 'Miranda Hart and Nick Hewer', '3–5']
SQL:

assistant: SELECT "First broadcast" FROM "Table" WHERE "Davids team" = 'David O''Doherty and Katherine Parkinson';