Task: Data-Imputation (source dataset: tablib)

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:
|   ID Sexo | Sexo      |   Ano |   Cantidad_alumnos | Promedio_lenguaje   |   Promedio_matematica |
|----------:|:----------|------:|-------------------:|:--------------------|----------------------:|
|         1 | Femenino  |  2004 |              79261 | 500.93463367860613  |               483.67  |
|         1 | Femenino  |  2005 |             172546 | 497.8312623880009   |               484.982 |
|         1 | Femenino  |  2006 |             180589 | [MISSING]           |               485.345 |
|         1 | Femenino  |  2007 |             219368 | 498.2520969330075   |               486.035 |
|         1 | Femenino  |  2008 |             226824 | 496.95964271858355  |               486.213 |
|         1 | Femenino  |  2009 |             249736 | 496.85990405868597  |               487.621 |
|         1 | Femenino  |  2010 |             257177 | 499.72471877345174  |               485.559 |
|         1 | Femenino  |  2011 |             254598 | 500.898357410506    |               486.816 |
|         1 | Femenino  |  2012 |             239460 | 501.28062724463376  |               488.747 |
|         1 | Femenino  |  2013 |             239758 | 498.09322316669306  |               487.729 |
|         1 | Femenino  |  2014 |             239281 | 499.2738286784158   |               486.627 |
|         1 | Femenino  |  2015 |             254034 | 498.38462961650805  |               487.918 |
|         1 | Femenino  |  2016 |             260393 | 501.1202106047398   |               491.168 |
|         2 | Masculino |  2004 |              72493 | 501.11528009600926  |               517.77  |
|         2 | Masculino |  2005 |             156442 | 503.44630597921275  |               518.176 |
|         2 | Masculino |  2006 |             161815 | 501.35178444519977  |               518.14  |
|         2 | Masculino |  2007 |             190866 | 503.8111659488856   |               517.211 |
|         2 | Masculino |  2008 |             194103 | 505.14765871727894  |               517.393 |
|         2 | Masculino |  2009 |             220069 | 505.4475323648492   |               515.079 |
|         2 | Masculino |  2010 |             230771 | 502.0680198118481   |               518.211 |
|         2 | Masculino |  2011 |             231424 | 501.90125051852874  |               517.396 |
|         2 | Masculino |  2012 |             209651 | 500.85138635160337  |               514.315 |
|         2 | Masculino |  2013 |             213353 | 505.15380144642916  |               515.299 |
|         2 | Masculino |  2014 |             212696 | 504.0728269454997   |               516.681 |
|         2 | Masculino |  2015 |             225715 | 504.0792946857763   |               515.121 |
|         2 | Masculino |  2016 |             229462 | 501.2344789115409   |               511.438 |



row_idx: 2
col_idx: 4
col_name: Promedio_lenguaje
label: 499.67422711239334
output: value: 499.67422711239334
tablib_key: tables/job=github_000005/batch=008354/jhxCXMLOUctgryz11dH8CBRdtAkIlhMw29byBPKxhH0=