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:
| Club | Sport | League | Titles | Founded |
| --- | --- | --- | --- | --- |
| Lincoln Stars | Hockey | US Hockey League | 5.0 | 1996.0 |
| Omaha Lancers | Hockey | US Hockey League | 10.0 | 1986.0 |
| Tri-City Storm | Hockey | US Hockey League | 1.0 | 2006.0 |
| No Coast Derby Girls | Roller derby | Women's Flat Track Derby Association | 0.0 | 2005.0 |
| Omaha Rollergirls | Roller derby | Women's Flat Track Derby Association | 0.0 | 2006.0 |
Question:
Which Founded  has a League of women's flat track derby association, and a Club of omaha rollergirls?
Answer:
2006.0