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:
| Date | Track | Race | Dist. | Purse ( US$ ) | Track Surf. | Winning horse | Win jockey |
| --- | --- | --- | --- | --- | --- | --- | --- |
| January 13 | Fair Grounds Race Course | LeComte Stakes | 1 Mile | $98,000 | Dirt | Hard Spun | M. Pino |
| February 3 | Laurel Park | Miracle Wood Stakes | 1 Mile | $50,900 | Dirt | Crafty Bear | M. Pino |
| March 3 | Gulfstream Park | Fountain of Youth Stakes | 1⅛ Miles | $350,000 | Dirt | Scat Daddy | John Velázquez |
| March 3 | Gulfstream Park | Hutchesson Stakes | 7½ Furlongs | $150,000 | Dirt | King of the Roxy | Edgar Prado |
| March 3 | Santa Anita Park | Robert B. Lewis Stakes | 1-1/16 Miles | $200,000 | Dirt | Great Hunter | Corey Nakatani |
| March 10 | Aqueduct Racetrack | The Gotham Stakes | 1-1/16 Miles | $200,000 | Dirt | Cowtown Cat | R. Dominguez |
| March 10 | Fair Grounds Race Course | Louisiana Derby | 1-1/16 Miles | $594,000 | Dirt | Circular Quay | John Velázquez |
| March 17 | Oaklawn Park | The Rebel Stakes | 1-1/16 Miles | $300,000 | Dirt | Curlin | Robby Albarado |
| March 17 | Tampa Bay Downs | Tampa Bay Derby | 1-1/16 Miles | $300,000 | Dirt | Street Sense | C. Borel |
| March 24 | Turfway Park | Lane's End Spiral Stakes | 1⅛ Miles | $500,000 | Dirt | Hard Spun | M. Pino |
| March 24 | Laurel Park | Private Terms Stakes | 1 Mile | $100,000 | Dirt | Etude | Luis Garcia |
| March 31 | Gulfstream Park | Florida Derby | 1⅛ Miles | $1,000,000 | Dirt | Scat Daddy | Edgar Prado |
| April 7 | Aqueduct Racetrack | Wood Memorial Stakes | 1⅛ Miles | $750,000 | Dirt | Nobiz Like Shobiz | Cornelio Velázquez |
| April 7 | Santa Anita Park | Santa Anita Derby | 1⅛ Miles | $750,000 | Dirt | Tiago | Mike Smith |
| April 7 | Hawthorne Race Course | Illinois Derby | 1⅛ Miles | $500,000 | Dirt | Cowtown Cat | Fernando Jara |
| April 14 | Keeneland Race Course | Blue Grass Stakes | 1⅛ Miles | $750,000 | Dirt | Dominican | Rafeal Bejarano |
| April 14 | Oaklawn Park | Arkansas Derby | 1⅛ Miles | $1,000,000 | Dirt | Curlin | Robby Albarado |
| April 21 | Pimlico Race Course | Federico Tesio Stakes | 1⅛ Miles | $125,000 | Dirt | Xchanger | Ramon A. Dominguez |
| April 28 | Churchill Downs | Derby Trial Stakes | 7½ Furlongs | $100,000 | Dirt | Flying First Class | Mark Guidry |
| May 5 | Churchill Downs | Kentucky Derby | 1 1/4 Miles | $11.80 | Dirt | Street Sense | Calvin Borel |
Question:
What was the Illinois Derby purse?
Answer:
$500,000