user
Instruction
Answer the question based on the provided table.


Table
Table Title: George Goodman Simpson
Table Content:
| No. | Date/time | Aircraft | Foe | Result | Location | Notes |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | 4 December 1916 @ 1100 hours | Nieuport serial number 3958 | Albatros D.I | Driven down out of control | Northeast of Bapaume, France | Victory shared with another pilot |
| 2 | 24 April 1917 @ 0840 hours | Sopwith Triplane s/n N5460 | Albatros D.III | Driven down out of control | Sailly, France |  |
| 3 | 2 May 1917 @ 0945 hours | Sopwith Triplane s/n N5460 | German two-seater aircraft | Driven down out of control | Douai, France |  |
| 4 | 11 May 1917 @ 1950 hours | Sopwith Triplane s/n N5460 | Albatros D.III | Driven down out of control | Douai, France |  |
| 5 | 11 May 1917 @ 1950 hours | Sopwith Triplane s/n N5460 | Albatros D.III | Set afire in midair; destroyed | Douai, France |  |
| 6 | 23 May 1917 @ 1800 hours | Sopwith Triplane s/n N5460 | Albatros D.III | Driven down out of control | Douai, France |  |
| 7 | 24 July 1917 @ 0635 hours | Sopwith Triplane s/n N5462 | German two-seater aircraft | Driven down out of control | Leffinghe |  |
| 8 | 28 July 1917 @ 1735 hours | Sopwith Triplane s/n N5462 | German two-seater aircraft | Driven down out of control | Middelkerke, Belgium | Victory shared with Francis Mellersh |


Question
what number aerial victory was the only one to result in the the foe being set afire in midair?


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