user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Final' regarding '2015 World Championships in Athletics – Men's 100 metres'
Table Content:
| Rank | Lane | Name | Nationality | Time | Notes |
| --- | --- | --- | --- | --- | --- |
| - | 5 | Usain Bolt | Jamaica (JAM) | 9.79 | SB |
| - | 7 | Justin Gatlin | United States (USA) | 9.80 | - |
| - | 3 | Trayvon Bromell | United States (USA) | 9.92 | - |
| - | 9 | Andre De Grasse | Canada (CAN) | 9.92 | PB |
| 5 | 4 | Mike Rodgers | United States (USA) | 9.94 | - |
| 6 | 6 | Tyson Gay | United States (USA) | 10.00 | - |
| 7 | 8 | Asafa Powell | Jamaica (JAM) | 10.00 | - |
| 8 | 1 | Jimmy Vicaut | France (FRA) | 10.00 | - |
| 9 | 2 | Su Bingtian | China (CHN) | 10.06 | - |


Question
What was Bolt's winning time and how much did he win by?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["In the final, Bolt finished a second ahead of Gatlin, in a time of 9.79 s."]