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:
| Tournament            | 1984                | 1993   | 1994   | 1995   | 1996   | Career SR   | 1985                | 1986                | 1987                | 1988                | 1989                | 1990   | 1991   | 1992   |
|:----------------------|:--------------------|:-------|:-------|:-------|:-------|:------------|:--------------------|:--------------------|:--------------------|:--------------------|:--------------------|:-------|:-------|:-------|
| Australian Open       | A                   | A      | 3R     | 4R     | A      | 0 / 5       | A                   | NH                  | A                   | A                   | A                   | 3R     | 1R     | 2R     |
| French Open           | 3R                  | QF     | 1R     | 1R     | A      | 0 / 12      | 1R                  | 1R                  | QF                  | 1R                  | 3R                  | 4R     | 1R     | 1R     |
| Wimbledon             | A                   | 1R     | 1R     | 1R     | A      | 0 / 10      | A                   | 1R                  | 1R                  | 2R                  | 2R                  | 3R     | 4R     | 1R     |
| US Open               | A                   | 3R     | SF     | 1R     | A      | 0 / 7       | A                   | 1R                  | 1R                  | A                   | A                   | 1R     | 3R     | A      |
| Grand Slam SR         | 0 / 1               | 0 / 3  | 0 / 4  | 0 / 4  | 0 / 0  | 0 / 34      | 0 / 1               | 0 / 3               | 0 / 3               | 0 / 2               | 0 / 2               | 0 / 4  | 0 / 4  | 0 / 3  |
| Indian Wells          | Not MS1 Before 1990 | A      | A      | 1R     | A      | 0 / 3       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 1R     | A      | 3R     |
| Key Biscayne          | Not MS1 Before 1990 | A      | A      | 2R     | 1R     | 0 / 5       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 2R     | 2R     | 2R     |
| Monte Carlo           | Not MS1 Before 1990 | 1R     | 1R     | 2R     | A      | 0 / 6       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 2R     | 1R     | 3R     |
| Rome                  | Not MS1 Before 1990 | 3R     | 1R     | 1R     | A      | 0 / 6       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 2R     | 1R     | 1R     |
| Hamburg               | Not MS1 Before 1990 | 3R     | 1R     | A      | A      | 0 / 5       | [MISSING]           | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 1R     | W      | QF     |
| Canada                | Not MS1 Before 1990 | A      | A      | A      | A      | 0 / 0       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | A      | A      | A      |
| Cincinnati            | Not MS1 Before 1990 | A      | 1R     | A      | A      | 0 / 2       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 1R     | A      | A      |
| Stuttgart (Stockholm) | Not MS1 Before 1990 | A      | A      | A      | A      | 0 / 3       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 2R     | 3R     | 3R     |
| Paris                 | Not MS1 Before 1990 | 3R     | A      | A      | A      | 0 / 4       | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | Not MS1 Before 1990 | 1R     | QF     | 1R     |
| Masters Series SR     | nan                 | 0 / 4  | 0 / 4  | 0 / 4  | 0 / 1  | 0 / 34      | nan                 | nan                 | nan                 | nan                 | nan                 | 0 / 8  | 1 / 6  | 0 / 7  |
| Year End Ranking      | 138                 | 17     | 28     | 121    | 409    | nan         | 159                 | 33                  | 76                  | 127                 | 74                  | 34     | 8      | 23     |



row_idx: 9
col_idx: 7
col_name: 1985
label: Not MS1 Before 1990