Task: NL2SQL (source dataset: WikiSQL)

Natural language to SQL, also known as NL2SQL, is the problem of generating a SQL query that can be executed on a input table, for a given natural language question.

You will be given an input table called "table" in the markdown format, as well as a question. Your task is to generate an SQL query that can be executed on the input table to answer the question.

Please ensure that the generated SQL only return relevant columns being specifically asked in the question (e.g., in SQL please don't return more than one columns in SELECT if only one column is needed to answer the given question, and similarly please refrain from using SELECT * unless the entire row is needed to answer the question).
 
When generating SQL code, please use the SQLite syntax to ensure that your SQL is executable on SQLite3. Use only columns that are present in the table, always use quotes around your column and table names (some column names have punctuation or special characters), and refer to the columns using the column-names exactly as they appear in the table, do not add or remove punctuation (underscore, slash, etc.)

No explanation, return the code only with the following markdown codeblock format : ```sql<SQL CODE>```. For example, ```sql
SELECT * FROM "table"
``` is a valid format.

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?

table_id: 2-11306889-3
label: SELECT "Purse ( US$ )" FROM "table" WHERE "Race" = "illinois derby"