user
Instruction
Answer the question based on the provided table.


Table
Table Title: Africa Squadron
Table Content:
| Vessel | Captor | Date | Location |
| --- | --- | --- | --- |
| Porpoise | Raritan | 23 January 1845 | Rio de Janeiro |
| Albert | Bainbridge | June 1845 | Bahia |
| Laurens | Onkahye | 23 January 1848 | Rio de Janeiro |
| A.D. Richardson | Perry | 11 December 1848 | Rio de Janeiro |
| Independence | Perry | 13 December 1848 | Rio de Janeiro |
| Susan | Perry | 6 February 1849 | Rio de Janeiro |


Question
how many vessels were captured in rio de janeiro


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["5"]