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 | Venezuela | 5 | 2 | 3 | 10 |
| 2 | Colombia | 4 | 4 | 9 | 17 |
| 3 | Dominican Republic | 4 | 3 | 4 | 11 |
| 4 | Peru | 3 | 3 | 8 | 14 |
| 5 | Ecuador | 2 | 3 | 3 | 8 |
| 6 | Guatemala | 1 | 1 | 1 | 3 |
| 7 | Chile | 0 | 3 | 2 | 5 |
| 8 | Panama | 0 | 0 | 3 | 3 |
| 9 | Bolivia | 0 | 0 | 1 | 1 |
| 9 | Paraguay | 0 | 0 | 1 | 1 |
| Total | Total | 19 | 19 | 35 | 73 |
Question:
how many nations won at least three silver medals?
Answer:
5