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 | Brazil | 9 | 0 | 0 | 9 |
| 2 | Argentina | 0 | 7 | 1 | 8 |
| 3 | Uruguay | 0 | 1 | 4 | 5 |
| 4 | Dominican Republic | 0 | 1 | 0 | 1 |
| 5 | Chile | 0 | 0 | 1 | 1 |
| 5 | Greenland | 0 | 0 | 1 | 1 |
| 5 | Paraguay | 0 | 0 | 1 | 1 |
| 5 | Puerto Rico | 0 | 0 | 1 | 1 |
| Total | Total | 9 | 9 | 9 | 27 |
Question:
how many nations are there?
Answer:
8