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                                                                                              | Location         | Est.      | Mascot        | Colors                         |
|:--------------------------------------------------------------------------------------------------|:-----------------|:----------|:--------------|:-------------------------------|
| Charles A. Carson Middle School (Consolidated into Delbert L. Secrist, & Charles Dietz 2013)      | Carson Park      | 1967.0    | Cougars       | nan                            |
| Ida Flood Dodge Traditional Magnet Middle School                                                  | nan              | 1986.0    | Bulldogs      | Turquoise and Black            |
| Doolen Middle School                                                                              | Doolen-Fruitvale | 1941.0    | Thunderbirds  | Burgundy and White             |
| Rollin T. Gridley Middle School                                                                   | Halcyon Acres    | 1974.0    | Grizzly Bears | nan                            |
| Hohokam Middle School (Consolidated into Valencia in 2013)                                        | Drexel Heights   | nan       | Hawks         | Maroon and Yellow              |
| Joseph W. Magee Middle School                                                                     | Carriage Hill    | 1964.0    | Roadrunners   | nan                            |
| Mansfeld Magnet Middle School                                                                     | Drake            | 1929.0    | Bulldogs      | Blue and White                 |
| Mary Belle McCorkle PreK-8 School                                                                 | Casitas Del Sol  | 2011.0    | nan           | nan                            |
| Pistor Middle School                                                                              | Manzanita Manor  | 1981.0    | Panthers      | nan                            |
| Roskruge Bilingual Magnet Middle School                                                           | West University  | 1914.0    | Pumas/Cougars | Turquoise, Black, Purple, Gold |
| Delbert L. Secrist Middle School                                                                  | South Harrison   | 1974.0    | Scorpions     | nan                            |
| Madge Utterback Middle Magnet School                                                              | Sunland Vista    | 1959.0    | Unicorns      | nan                            |
| Alice Vail Middle School                                                                          | Desert Aire      | 1956.0    | Falcons       | nan                            |
| Valencia Middle School                                                                            | Drexel Heights   | 1993.0    | Jaguars       | nan                            |
| Wakefield Middle School (Consolidated into Madge Utterback, Charles Hollinger, & Safford in 2013) | Whitestone       | [MISSING] | Knights       | nan                            |



row_idx: 14
col_idx: 2
col_name: Est.
label: 1966.0