Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Saïda El Mehdi
Table title:
Achievements
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2004 </td><td class="highlighted"  colspan=1 rowspan=2 > African Championships </td><td colspan=1 rowspan=2 > Brazzaville, Congo </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > 800 m </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2nd </td><td class="highlighted"  colspan=1 rowspan=1 > 1500 m </td></tr>
<tr> <td colspan=1 rowspan=2 > 2005 </td><td colspan=1 rowspan=2 > Jeux de la Francophonie </td><td colspan=1 rowspan=2 > Niamey, Niger </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 800 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 1500 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > African Championships </td><td colspan=1 rowspan=1 > Bambous, Mauritius </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > 1500 m </td></tr>
</table>
Question:
In what year did Saida El Mehdi win an 800 m gold medal and a 1500 m silver medal at the African Championships?
Answer:
Saïda El Mehdi won an 800 m gold medal and a 1500 m silver medal at the 2004 African Championships.