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 | Home Team | Away Team | Winner | Score |
| --- | --- | --- | --- | --- |
| 2009.0 | Billings Outlaws | RiverCity Rage | Outlaws | 71-62 |
| 2010.0 | Billings Outlaws | Sioux Falls Storm | Outlaws | 43-34 |
| 2011.0 | Sioux Falls Storm | Tri-Cities Fever | Storm | 37-10 |
| 2012.0 | Sioux Falls Storm | Tri-Cities Fever | Storm | 59-32 |
| 2013.0 | Sioux Falls Storm | Nebraska Danger | Storm | 43-40 |
Question:
who is the winner when the home team is sioux falls storm and the year is earlier than 2012?
Answer:
Storm