Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Episode | First broadcast | Davids team | Lees team | Scores |
| --- | --- | --- | --- | --- |
| 5x01 | 9 September 2011 | Rebecca Front and Jack Whitehall | Miranda Hart and Nick Hewer | 3–5 |
| 5x02 | 16 September 2011 | Robert Webb and Sir Terry Wogan | Kevin Bridges and Katy Wix | 6–3 |
| 5x03 | 23 September 2011 | David O'Doherty and Katherine Parkinson | Louie Spence and Bill Turnbull | 6–3 |
| 5x05 | 7 October 2011 | Greg Davies and Konnie Huq | Marcus Brigstocke and Phil Tufnell | 7–3 |
| 5x06 | 14 October 2011 | Bill Oddie and Frank Skinner | Sarah Millican and Jon Richardson | 3–7 |
| 5x07 | 21 October 2011 | Mackenzie Crook and Chris Packham | Victoria Coren and Rhod Gilbert | 4–6 |
Question:
When david o'doherty and katherine parkinson are both on the davids team when is the first broadcast?
Answer:
23 September 2011