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:
| District | Incumbent | Party | First elected | Result | Candidates |
| --- | --- | --- | --- | --- | --- |
| Illinois 3 | Edward A. Kelly | Democratic | 1944.0 | Lost re-election Republican gain | Fred E. Busbey (R) 57.2% Edward A. Kelly (D) 42.8% |
| Illinois 4 | Martin Gorski | Democratic | 1942.0 | Re-elected | Martin Gorski (D) 70.7% John T. Parsons (R) 29.3% |
| Illinois 13 | Leo E. Allen | Republican | 1932.0 | Re-elected | Leo E. Allen (R) 77.8% Michael M. Kinney (D) 22.2% |
| Illinois 17 | Leslie C. Arends | Republican | 1934.0 | Re-elected | Leslie C. Arends (R) 71.2% Carl Vrooman (D) 28.8% |
| Illinois 18 | Jessie Sumner | Republican | 1938.0 | Retired Republican hold | Edward H. Jenison (R) 65.1% C. E. Spang (D) 34.9% |
| Illinois 20 | Sid Simpson | Republican | 1942.0 | Re-elected | Sid Simpson (R) 58.8% Don Irving (D) 41.2% |
| Illinois 22 | Melvin Price | Democratic | 1944.0 | Re-elected | Melvin Price (D) 50.7% Calvin D. Johnson (R) 49.3% |
| Illinois 24 | Roy Clippinger | Republican | 1945.0 | Re-elected | Roy Clippinger (R) 58.9% Edward Hines (D) 41.1% |
Question:
What district is incumbent sid simpson from?
Answer:
Illinois 20