Task: Data-Imputation (source dataset: WebTable)

Please fill in the missing value in the input table. The missing value is denoted by '[MISSING]'. Please only return the value filled in. Do not return the whole table.

No explanation, return the value filled in JSON format: {"value": "filled_value"}. 

Input Table:
| Keeper              | years     | First Assistant     | Second Assistant     | Special Assistant                     |
|:--------------------|:----------|:--------------------|:---------------------|:--------------------------------------|
| Henry W. Clark      | nan       | J. W. Tougee        | nan                  | nan                                   |
| Henry W. Clark      | 1879-1907 | Nathaniel Dodge     | Charles E. Dodge     | Uriah B. Dodge                        |
| Henry W. Clark      | 1879-1907 | Nathaniel Dodge     | John F. Hayes        | Uriah B. Dodge                        |
| Henry W. Clark      | 1879-1907 | John F. Hayes       | Silas H. Littlefield | Uriah B. Dodge                        |
| Henry W. Clark      | 1879-1907 | John F. Hayes       | Charles F. Milliken  | Uriah B. Dodge                        |
| Henry W. Clark      | 1879-1907 | Charles F. Milliken | Simon Dodge          | Uriah B. Dodge                        |
| Henry W. Clark      | 1879-1907 | Simon Dodge         | Willet H. Clark      | Uriah B. Dodge                        |
| Simon Dodge         | 1879-1907 | Willet H. Clark     | Charles E. Wescott   | Uriah B. Dodge                        |
| Simon Dodge         | 1907      | Willet H. Clark     | Everett A. Hoxsie    | Elmer H. Day                          |
| Simon Dodge         | 1907-1912 | Willet H. Clark     | William A. Baker     | Everett A. Hoxsie                     |
| Simon Dodge         | 1907-1912 | Willet H. Clark     | George L. Hoxsie     | Everett A. Hoxsie                     |
| Simon Dodge         | 1907-1912 | Willet H. Clark     | Louis F. Schlett     | Everett A. Hoxsie                     |
| Simon Dodge         | 1912-1990 | Willet H. Clark     | Samuel Pickup        | Unknown, position possibly eliminated |
| Simon Dodge         | 1912-1990 | Willet H. Clark     | Ezra Dunn            | Unknown, position possibly eliminated |
| Simon Dodge         | 1912-1990 | Willet H. Clark     | Edward Murphy        | Unknown, position possibly eliminated |
| Simon Dodge         | 1912-1990 | Willet H. Clark     | Lawrence H. Congdon  | Unknown, position possibly eliminated |
| Simon Dodge         | 1912-1990 | Lawrence H. Congdon | John H. Miller       | Unknown, position possibly eliminated |
| Willet H. Clark     | 1912-1990 | Charles M. Ball     | John H. Miller       | Unknown, position possibly eliminated |
| Willet H. Clark     | 1912-1990 | Charles M. Ball     | Carl F. W. Anderson  | Unknown, position possibly eliminated |
| Willet H. Clark     | 1912-1990 | Charles M. Ball     | Percy L. Oppel       | Unknown, position possibly eliminated |
| Willet H. Clark     | 1912-1990 | Charles M. Ball     | Hugo R. Carlson      | Unknown, position possibly eliminated |
| Willet H. Clark     | 1912-1990 | Earl E. Carr        | Hugo R. Carlson      | Unknown, position possibly eliminated |
| Carl F. W. Anderson | 1912-1990 | Earl E. Carr        | Hugo R. Carlson      | Unknown, position possibly eliminated |
| Carl F. W. Anderson | 1912-1990 | Earl E. Carr        | Elmer F. O'Toole     | Unknown, position possibly eliminated |
| Carl F. W. Anderson | 1912-1990 | Earl E. Carr        | Charles A. Rogers    | Unknown, position possibly eliminated |
| Carl F. W. Anderson | 1912-1990 | Earl E. Carr        | Roger H. Green       | [MISSING]                             |
| Earl E. Carr        | 1912-1990 | Elmer F. O'Toole    | Alfred L. Bennett    | Unknown, position possibly eliminated |
| Earl E. Carr        | 1912-1990 | Earl A. Rose        | Alfred L. Bennett    | Unknown, position possibly eliminated |
| Earl E. Carr        | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |
| Unknown             | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |
| Arthur Gasper       | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |
| Unknown             | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |
| Howard Beebe        | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |
| Unknown             | 1912-1990 | Unknown             | Unknown              | Unknown, position possibly eliminated |



row_idx: 25
col_idx: 4
col_name: Special Assistant
label: Unknown, position possibly eliminated