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:
| Date | Result | Opponent | Method | Round |
| --- | --- | --- | --- | --- |
| 20 November 2011 | Win | Dominique Alexander | Knockout | 4.0 |
| 31 July 2009 | Win | Kevin Karusa | Knockout | 5.0 |
| 24 April 2009 | Win | Jason Barnett | Technical Knockout | 7.0 |
| 13 September 2008 | Win | Robert Kooser | Knockout | 1.0 |
| 11/04/2008 | Win | Ed Mahone | Decision (Unanimous) | 8.0 |
| 26 January 2008 | Win | Richard Tutaki | Knockout | 1.0 |
| 24 March 2007 | Win | Mosese Kavika | Technical Knockout | 4.0 |
| 02/12/2006 | Win | Fatu Tuimanono | Technical Knockout | 2.0 |
| 27 May 2006 | Draw | Elisara Sii Uta | Draw | 6.0 |
| 27 May 2006 | Win | John Parai | Knockout | 2.0 |
| 01/04/2006 | Win | Junior Pati | Knockout | 3.0 |
| 24 February 2006 | Win | Vai Toevai | Technical Knockout | 3.0 |
| 18 August 2004 | Loss | John Wyborn | Knockout | 1.0 |
| 18 August 2004 | Win | Steve Kilarski | Knockout | 2.0 |
| 30 July 2004 | Draw | Alex Leapai | Draw | 6.0 |
| 17 July 2004 | Win | Vai Toevai | Knockout | 3.0 |
| 15 May 2004 | Win | Steven Walker | Knockout | 2.0 |
| 23 April 2004 | Win | Chris Armstrong | Knockout | 1.0 |
| 08/04/2004 | Win | Baden Oui | Decision (Unanimous) | 4.0 |
| 20 February 2004 | Win | Barry Prior | Knockout | 3.0 |
Question:
When did the opponent knockout Barry Prior in more than 2 rounds?
Answer:
20 February 2004