user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Senate' regarding '76th United States Congress'
Table Content:
| State (class) | Vacator | Reason for change | Successor | Date of successor's formal installation |
| --- | --- | --- | --- | --- |
| Illinois (2) | J. Hamilton Lewis (D) | Died April 9, 1939. Successor appointed April 14, 1939, to continue the term. | James M. Slattery (D) | April 14, 1939 |
| Kentucky (2) | M. M. Logan (D) | Died October 3, 1939. Successor appointed October 10, 1939, to continue the term. | Happy Chandler (D) | October 10, 1939 |
| Idaho (2) | William E. Borah (R) | Died January 19, 1940. Successor appointed January 27, 1940, to continue the term. | John W. Thomas (R) | January 27, 1940 |
| Vermont (3) | Ernest W. Gibson (R) | Died June 20, 1940. Successor appointed October 14, 1940, to continue the term. | Ernest W. Gibson, Jr. (R) | October 14, 1940 |
| Minnesota (2) | Ernest Lundeen (FL) | Died August 31, 1940. Successor appointed October 14, 1940, to continue the term. Successor lost election to finish the term. | Joseph H. Ball (R) | October 14, 1940 |
| Nevada (1) | Key Pittman (D) | Died November 10, 1940. Successor appointed November 27, 1940, to continue the term. Successor lost nomination to finish the term. | Berkeley L. Bunker (D) | November 27, 1940 |
| Illinois (2) | James M. Slattery (D) | Interim appointee lost election November 21, 1940, to finish the term. | Charles W. Brooks (R) | November 22, 1940 |
| Washington (1) | Lewis B. Schwellenbach (D) | Resigned December 16, 1940, to become judge of the U.S. District Court for the Eastern District of Washington. | Monrad Wallgren (D) | December 19, 1940 |


Question
When did James Hamilton Lewis (D), James M. Slattery (D), and  Charles W. Brooks (R) were formally installed?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["James Hamilton Lewis (D), until April 9, 1939 James M. Slattery (D), April 14, 1939 – November 21, 1940 Charles W. Brooks (R), from November 22, 1940."]