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 | 7 | 4 | 3 | 14 |
| 2 | Bolivia | 2 | 2 | 2 | 6 |
| 2 | Chile | 2 | 2 | 2 | 6 |
| 4 | Peru | 1 | 3 | 3 | 7 |
| 5 | Ecuador | 1 | 1 | 1 | 3 |
| 6 | Colombia | 0 | 1 | 2 | 3 |
| Total | Total | 13 | 13 | 13 | 39 |
Question:
what is the number of silver medals won by peru and ecuador combined?
Answer:
4