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:
| Year | Winning team | Losing team | Score | Site |
| --- | --- | --- | --- | --- |
| 1991.0 | Uni-President Lions | Wei Chuan Dragons | 13–5 | Taipei City |
| 1998.0 | Wei Chuan Dragons | Sinon Bulls | 5–2 | Taichung City |
| 2000.0 | Uni-President Lions | Sinon Bulls | 4–1 | Taichung City |
| 2001.0 | Brother Elephants | Uni-President Lions | 7–5 | Tainan City |
| 2004.0 | Sinon Bulls | Uni-President Lions | 8–6 | Tainan City |
| 2007.0 | Uni-President Lions | La New Bears | 4–2 | Kaohsiung County |
| 2008.0 | Uni-President 7-Eleven Lions | Brother Elephants | 4–0 | Tainan City |
| 2009.0 | Uni-President 7-Eleven Lions | Brother Elephants | 5–2 | Tainan City |
Question:
When has a Site of tainan city and a Score of 8–6?
Answer:
2004.0