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:
| Rendering engine   | Browser                | Platform(s)      | Engine version   | CSS grade   |
|:-------------------|:-----------------------|:-----------------|:-----------------|:------------|
| Trident            | Internet  Explorer 4.0 | Win 95+          | 4                | X           |
| Trident            | Internet  Explorer 5.0 | Win 95+          | 5                | C           |
| Trident            | Internet  Explorer 5.5 | Win 95+          | 5.5              | A           |
| Gecko              | Netscape Navigator 9   | Win 98+ / OSX.2+ | 1.8              | A           |
| Webkit             | Safari 1.3             | OSX.3            | 312.8            | A           |
| Webkit             | Safari 2.0             | OSX.4+           | 419.3            | A           |
| Webkit             | Safari 3.0             | OSX.4+           | 522.1            | A           |
| Webkit             | OmniWeb 5.5            | OSX.4+           | 420              | A           |
| Webkit             | iPod Touch / iPhone    | iPod             | 420.1            | A           |
| Webkit             | S60                    | S60              | 413              | A           |
| Presto             | Opera 7.0              | Win 95+ / OSX.1+ | -                | A           |
| Presto             | Opera 7.5              | Win 95+ / OSX.2+ | -                | A           |
| Presto             | Opera 8.0              | Win 95+ / OSX.2+ | -                | A           |
| Presto             | Opera 8.5              | Win 95+ / OSX.2+ | -                | A           |
| Presto             | Opera 9.0              | Win 95+ / OSX.3+ | -                | A           |
| Presto             | Opera 9.2              | Win 88+ / OSX.3+ | -                | A           |
| Presto             | Opera 9.5              | Win 88+ / OSX.3+ | -                | A           |
| Presto             | Opera for Wii          | Wii              | -                | A           |
| Presto             | Nokia N800             | N800             | -                | A           |
| Presto             | Nintendo DS browser    | Nintendo DS      | 8.5              | C/A1        |
| KHTML              | Konqureror 3.1         | KDE 3.1          | 3.1              | C           |
| KHTML              | Konqureror 3.3         | KDE 3.3          | 3.3              | A           |
| KHTML              | Konqureror 3.5         | KDE 3.5          | 3.5              | A           |
| Tasman             | Internet Explorer 4.5  | Mac OS 8-9       | -                | X           |
| Tasman             | Internet Explorer 5.1  | Mac OS 7.6-9     | 1                | C           |
| Tasman             | Internet Explorer 5.2  | Mac OS 8-X       | 1                | C           |
| Misc               | NetFront 3.1           | Embedded devices | -                | C           |
| Misc               | NetFront 3.4           | Embedded devices | -                | [MISSING]   |
| Misc               | Dillo 0.8              | Embedded devices | -                | X           |
| Misc               | Links                  | Text only        | -                | X           |
| Misc               | Lynx                   | Text only        | -                | X           |
| Misc               | IE Mobile              | Windows Mobile 6 | -                | C           |
| Misc               | PSP browser            | PSP              | -                | C           |
| Other browsers     | All others             | -                | -                | U           |
| None               | None                   | None             | None             | None        |



row_idx: 27
col_idx: 4
col_name: CSS grade
label: A
output: value: A
tablib_key: tables/job=github_000005/batch=009026/-ft7HAx1cah_2d5oS4iQS5z_zt0E7p6V4r2Xwti7vOo=