user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'International competitions' regarding 'Agnetha Chelimo'
Table Content:
| Year | Competition | Venue | Position | Event | Notes |
| --- | --- | --- | --- | --- | --- |
| 1987 | All-Africa Games | Nairobi, Kenya | 1st | 5000 m walk | 25:38.91 GR |
| 1989 | African Championships | Lagos, Nigeria | 1st | 5000 m walk | 26:36.18 |
| 1990 | African Championships | Cairo, Egypt | 1st | 5000 m walk | 25:45.2 CR |
| 1991 | All-Africa Games | Cairo, Egypt | 1st | 5000 m walk | 24:25.00 GR |


Question
What events did Agnetha Chelimo compete in at the African Championships?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Agnetha Chelimo won the 5000 m walk in 1989 and 1990 at the African Championships."]