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:
|   # | Name                | Started           | Resigned          | Deputy                                                                                                              | Notes                                                                                                                                  |
|----:|:--------------------|:------------------|:------------------|:--------------------------------------------------------------------------------------------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------|
|   1 | Deke Slayton        | September 1, 1962 | November 1963     | nan                                                                                                                 | unofficial                                                                                                                             |
|   2 | Alan Shepard        | November 1963     | July 1969         | nan                                                                                                                 | nan                                                                                                                                    |
|   3 | Tom Stafford        | July 1969         | June 1971         | nan                                                                                                                 | Stafford held the position while Shepard prepared for and flew Apollo 14.                                                              |
|   4 | Alan Shepard        | June 1971         | August 1, 1974    | nan                                                                                                                 | nan                                                                                                                                    |
|   5 | John Young          | January 14, 1974  | April 15, 1987    | Paul J. Weitz                                                                                                       | Acting Chief during STS-1 training was Alan Bean.                                                                                      |
|   6 | Dan Brandenstein    | April 27, 1987    | October 1992      | Steven Hawley                                                                                                       | Hawley was Acting Chief while Brandenstein prepared for and flew STS-49, the first flight of Shuttle Endeavour.                        |
|   7 | Robert Gibson       | December 8, 1992  | September 6, 1994 | Linda Godwin                                                                                                        | Gibson handed the position over to Cabana to begin training for STS-71, the first Shuttle docking to Mir.                              |
|   8 | Robert Cabana       | September 6, 1994 | October 1997      | Linda Godwin                                                                                                        | Cabana handed the position over to Cockrell to begin training for STS-88, the first International Space Station assembly mission.      |
|   9 | Kenneth Cockrell    | October 1997      | October 1998      | nan                                                                                                                 | Cockrell later flew two Shuttle missions.                                                                                              |
|  10 | Charles Precourt    | October 1998      | November 2002     | Kent Rominger and Steve Smith                                                                                       | nan                                                                                                                                    |
|  11 | Kent Rominger       | November 2002     | September 2006    | Andy Thomas and Peggy Whitson                                                                                       | nan                                                                                                                                    |
|  12 | Steven W. Lindsey   | September 2006    | October 2009      | Janet Kavandi and Sunita Williams (February 2008 to October 2009).                                                  | Lindsey resigned when he was assigned to command STS-133, which at the time was planned to be the final Space Shuttle mission.         |
|  13 | Peggy Whitson       | October 2009      | July 2012         | Rick Sturckow (October 2009 to August 2011); Michael Barratt, MD, and then subsequently Robert Behnken and Eric Boe | Whitson was the first female and first non-pilot to serve as Chief Astronaut. She resigned when she went back on active flight status. |
|  14 | Robert Behnken      | July 2012         | July 2015         | Eric Boe                                                                                                            | Behnken and Boe both returned to flight status, working on the Commercial Crew vehicle.                                                |
|  15 | Christopher Cassidy | July 2015         | June 2017         | nan                                                                                                                 | Cassidy returned to flight status to await a future mission.                                                                           |
|  16 | Patrick Forrester   | June 2017         | present           | nan                                                                                                                 | [MISSING]                                                                                                                              |



row_idx: 15
col_idx: 5
col_name: Notes
label: nan