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:
| Block numbers   | Number of blocks(R)   |   Number of blocks(C) |   Number of blocks(O) | Address                            | Name              | Construction code   |
|:----------------|:----------------------|----------------------:|----------------------:|:-----------------------------------|:------------------|:--------------------|
| 101 - 110       | 10                    |                     2 |                     0 | Rivervale Walk                     | Rivervale Court   | N1C1/2              |
| 111 - 115       | 5                     |                     1 |                     0 | Rivervale Walk                     | Rivervale Court   | N1C3                |
| 116A - 117D     | 6                     |                     1 |                     1 | Rivervale Drive                    | Rivervale Edge    | N1C10               |
| 118             | 0                     |                     0 |                     1 | Rivervale Drive                    | Rivervale Plaza   | N1C4                |
| 119 - 120D      | 7                     |                     2 |                     1 | Rivervale Drive                    | Rivervale Gardens | N1C9                |
| 121 - 122F      | 11                    |                     2 |                     1 | Rivervale Drive                    | Rivervale Bank    | N1C11               |
| 123 - 124D      | 10                    |                     1 |                     1 | Rivervale Drive                    | Rivervale Grove   | N1C5/6              |
| 125 - 141       | 17                    |                     2 |                     0 | Rivervale Street                   | Rivervale Plains  | N1C7/8              |
| 142 - 149       | [MISSING]             |                     2 |                     0 | Rivervale Crescent/Rivervale Drive | Rivervale Place   | N1C12/13            |
| 150 - 156B      | 7                     |                     1 |                     1 | Rivervale Crescent                 | nan               | N1C23/24            |
| 157A - 161      | 9                     |                     1 |                     2 | Rivervale Crescent                 | Rivervale View    | N1C25               |
| 183 - 184C      | 7                     |                     1 |                     0 | Rivervale Crescent                 | Rivervale Gateway | N1C22               |
| 185 - 187B      | 10                    |                     1 |                     1 | Rivervale Crescent/Rivervale Drive | Rivervale Gateway | N1C19/20            |
| 188 - 192C      | 14                    |                     3 |                     2 | Rivervale Drive                    | Rivervale Gateway | N1C16/17/18         |
| 192 - 197       | 5                     |                     1 |                     1 | Rivervale Drive                    | Rivervale Haven   | N1C14               |
| Total           | 126                   |                    21 |                    12 | nan                                | nan               | nan                 |



row_idx: 8
col_idx: 1
col_name: Number of blocks(R)
label: 8