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:
| DVD Name | Ep # | Region 1 (US) | Region 1 (CAN) | Region 2 (UK) | Region 2 (Germany) | Region 4 (Australia) |
| --- | --- | --- | --- | --- | --- | --- |
| The Complete First Season | 25 (3 discs) | November 18, 2003 | August 11, 2009 | January 29, 2007 | November 26, 2004 | January 11, 2007 |
| The Complete Second Season | 25 (3 discs) | April 20, 2004 | August 11, 2009 | July 9, 2007 | March 31, 2005 | July 12, 2007 |
| The Complete Third Season | 25 (3 discs) | February 22, 2005 | August 11, 2009 | September 15, 2008 | September 2, 2005 | July 31, 2008 |
| The Complete Fourth Season | 25 (3 discs) | April 14, 2005 | January 5, 2010 | February 9, 2009 | December 2, 2005 | January 15, 2009 |
| The Complete Fifth Season | 25 (3 discs) | June 20, 2006 | January 5, 2010 | May 18, 2009 | May 26, 2006 | May 7, 2009 |
| The Complete Sixth Season | 24 (3 discs) | September 19, 2006 | January 5, 2010 | July 13, 2009 | November 24, 2006 | August 6, 2009 |
| The Complete Seventh Season | 22 (3 discs) | January 16, 2007 | November 9, 2010 | March 22, 2010 | March 9, 2007 | April 1, 2010 |
| The Complete Eighth Season | 23 (3 discs) | May 1, 2007 | November 9, 2010 | June 21, 2010 | August 24, 2007 | June 3, 2010 |
| The Complete Ninth Season | 13 (2 discs) | September 25, 2007 | November 9, 2010 | September 20, 2010 | October 19, 2007 | September 16, 2010 |
Question:
What is the region 2 (UK) date associated with a region 4 (Aus) date of July 31, 2008?
Answer:
September 15, 2008