user
Instruction
Answer the question based on the provided table.


Table
Table Title: 2012 GoPro Indy Grand Prix of Sonoma
Table Content:
| Pos | No. | Driver | Team | Engine | Laps | Time/Retired | Grid | Laps Led | Points |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 2 | Ryan Briscoe | Team Penske | Chevrolet | 85 | 2:07:02.8248 | 2 | 27 | 50 |
| 2 | 12 | Will Power | Team Penske | Chevrolet | 85 | + 0.4408 | 1 | 57 | 43 |
| 3 | 10 | Dario Franchitti | Chip Ganassi Racing | Honda | 85 | + 1.0497 | 6 | 0 | 35 |
| 4 | 8 | Rubens Barrichello | KV Racing Technology | Chevrolet | 85 | + 8.8529 | 11 | 0 | 32 |
| 5 | 38 | Graham Rahal | Chip Ganassi Racing | Honda | 85 | + 9.4667 | 13 | 0 | 30 |
| 6 | 3 | Hélio Castroneves | Team Penske | Chevrolet | 85 | + 11.2575 | 4 | 0 | 28 |
| 7 | 77 | Simon Pagenaud (R) | Schmidt Hamilton Motorsports | Honda | 85 | + 12.3087 | 9 | 0 | 26 |
| 8 | 4 | J.R. Hildebrand | Panther Racing | Chevrolet | 85 | + 22.8121 | 15 | 0 | 24 |
| 9 | 98 | Alex Tagliani | Team Barracuda – BHA | Honda | 85 | + 39.6868 | 8 | 0 | 22 |
| 10 | 11 | Tony Kanaan | KV Racing Technology | Chevrolet | 84 | + 1 lap | 16 | 0 | 20 |
| 11 | 18 | Justin Wilson | Dale Coyne Racing | Honda | 84 | + 1 lap | 20 | 0 | 19 |
| 12 | 19 | James Jakes | Dale Coyne Racing | Honda | 84 | + 1 lap | 24 | 0 | 18 |
| 13 | 9 | Scott Dixon | Chip Ganassi Racing | Honda | 84 | + 1 lap | 5 | 0 | 17 |
| 14 | 14 | Mike Conway | A.J. Foyt Enterprises | Honda | 84 | + 1 lap | 14 | 0 | 16 |
| 15 | 17 | Sebastián Saavedra | Andretti Autosport | Chevrolet | 84 | + 1 lap | 23 | 0 | 15 |
| 16 | 5 | E.J. Viso | KV Racing Technology | Chevrolet | 84 | + 1 lap | 17 | 0 | 14 |
| 17 | 78 | Simona de Silvestro | HVM Racing | Lotus | 84 | + 1 lap | 27 | 0 | 13 |
| 18 | 28 | Ryan Hunter-Reay | Andretti Autosport | Chevrolet | 84 | + 1 lap | 7 | 1 | 12 |
| 19 | 22 | Oriol Servià | Panther/Dreyer & Reinbold Racing | Chevrolet | 84 | + 1 lap | 18 | 0 | 12 |
| 20 | 20 | Ed Carpenter | Ed Carpenter Racing | Chevrolet | 84 | + 1 lap | 25 | 0 | 12 |
| 21 | 83 | Charlie Kimball | Chip Ganassi Racing | Honda | 82 | + 3 laps | 21 | 0 | 12 |
| 22 | 7 | Sebastien Bourdais | Dragon Racing | Chevrolet | 63 | Contact | 3 | 0 | 12 |
| 23 | 67 | Josef Newgarden (R) | Sarah Fisher Hartman Racing | Honda | 62 | Contact | 22 | 0 | 12 |
| 24 | 6 | Katherine Legge (R) | Dragon Racing | Chevrolet | 48 | Mechanical | 19 | 0 | 12 |
| 25 | 26 | Marco Andretti | Andretti Autosport | Chevrolet | 46 | Mechanical | 12 | 0 | 10 |
| 26 | 27 | James Hinchcliffe | Andretti Autosport | Chevrolet | 35 | Mechanical | 10 | 0 | 10 |
| 27 | 15 | Takuma Sato | Rahal Letterman Lanigan Racing | Honda | 2 | Mechanical | 26 | 0 | 10 |


Question
what engine was used by the winning driver?


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