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:
Agnetha Chelimo
Table title:
International competitions
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 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1987 </td><td colspan=1 rowspan=1 > All-Africa Games </td><td colspan=1 rowspan=1 > Nairobi, Kenya </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 5000 m walk </td><td colspan=1 rowspan=1 > 25:38.91 GR </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1989 </td><td class="highlighted"  colspan=1 rowspan=1 > African Championships </td><td colspan=1 rowspan=1 > Lagos, Nigeria </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > 5000 m walk </td><td colspan=1 rowspan=1 > 26:36.18 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1990 </td><td class="highlighted"  colspan=1 rowspan=1 > African Championships </td><td colspan=1 rowspan=1 > Cairo, Egypt </td><td class="highlighted"  colspan=1 rowspan=1 > 1st </td><td class="highlighted"  colspan=1 rowspan=1 > 5000 m walk </td><td colspan=1 rowspan=1 > 25:45.2 CR </td></tr>
<tr> <td colspan=1 rowspan=1 > 1991 </td><td colspan=1 rowspan=1 > All-Africa Games </td><td colspan=1 rowspan=1 > Cairo, Egypt </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 5000 m walk </td><td colspan=1 rowspan=1 > 24:25.00 GR </td></tr>
</table>
Question:
What events did Agnetha Chelimo compete in at the African Championships?
Answer:
Agnetha Chelimo won the 5000 m walk in 1989 and 1990 at the African Championships.