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:
| Rank | Nation | Gold | Silver | Bronze | Total |
| --- | --- | --- | --- | --- | --- |
| 1 | Nigeria | 14 | 12 | 9 | 35 |
| 2 | Algeria | 9 | 4 | 4 | 17 |
| 3 | Kenya | 8 | 11 | 4 | 23 |
| 4 | Ethiopia | 2 | 4 | 7 | 13 |
| 5 | Ghana | 2 | 2 | 2 | 6 |
| 6 | Ivory Coast | 2 | 1 | 3 | 6 |
| 7 | Egypt | 2 | 1 | 0 | 3 |
| 8 | Senegal | 1 | 1 | 5 | 7 |
| 9 | Morocco | 1 | 1 | 1 | 3 |
| 10 | Tunisia | 0 | 3 | 1 | 4 |
| 11 | Madagascar | 0 | 1 | 1 | 2 |
| 12 | Rwanda | 0 | 0 | 1 | 1 |
| 12 | Zimbabwe | 0 | 0 | 1 | 1 |
| 12 | Seychelles | 0 | 0 | 1 | 1 |
Question:
which nations have won only one medal?
Answer:
Rwanda, Zimbabwe, Seychelles