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:
| Constituency        | 1918             | 29            | 1929          | 30               | 31               | 1931                  | 32                    | 33                    | 1935                  | 36                    | 19               | 37                    | 39                    | 40                    | 41                    | 42                    | 43                    | 45                    | 1945       |
|:--------------------|:-----------------|:--------------|:--------------|:-----------------|:-----------------|:----------------------|:----------------------|:----------------------|:----------------------|:----------------------|:-----------------|:----------------------|:----------------------|:----------------------|:----------------------|:----------------------|:----------------------|:----------------------|:-----------|
| Ayr Burghs          | Younger          | Moore         | Moore         | Moore            | Moore            | Moore                 | Moore                 | Moore                 | Moore                 | Moore                 | Younger          | Moore                 | Moore                 | Moore                 | Moore                 | Moore                 | Moore                 | Moore                 | Moore      |
| Ayrshire N & Bute   | Hunter-Weston    | Hunter-Weston | Hunter-Weston | Hunter-Weston    | Hunter-Weston    | Hunter-Weston         | Hunter-Weston         | Hunter-Weston         | MacAndrew             | MacAndrew             | Hunter-Weston    | MacAndrew             | MacAndrew             | MacAndrew             | MacAndrew             | MacAndrew             | MacAndrew             | MacAndrew             | MacAndrew  |
| Glasgow Central     | Bonar Law        | Alexander     | Alexander     | [MISSING]        | Alexander        | Alexander             | Alexander             | Alexander             | Alexander             | Alexander             | Bonar Law        | Alexander             | Alexander             | Alexander             | Alexander             | Alexander             | Alexander             | Alexander             | Hutchison  |
| Glasgow Hillhead    | Horne            | Horne         | Horne         | Horne            | Horne            | Horne                 | Horne                 | Horne                 | Horne                 | Horne                 | Horne            | Reid                  | Reid                  | Reid                  | Reid                  | Reid                  | Reid                  | Reid                  | Reid       |
| Glasgow Pollok      | Gilmour          | Gilmour       | Gilmour       | Gilmour          | Gilmour          | Gilmour               | Gilmour               | Gilmour               | Gilmour               | Gilmour               | Gilmour          | Gilmour               | Gilmour               | Galbraith             | Galbraith             | Galbraith             | Galbraith             | Galbraith             | Galbraith  |
| Glasgow Kelvingrove | MacLeod          | Elliot        | Elliot        | Elliot           | Elliot           | Elliot                | Elliot                | Elliot                | Elliot                | Elliot                | MacLeod          | Elliot                | Elliot                | Elliot                | Elliot                | Elliot                | Elliot                | Elliot                | Williams   |
| Glasgow Cathcart    | Pratt            | Train         | Train         | Train            | Train            | Train                 | Train                 | Train                 | Train                 | Train                 | Pratt            | Train                 | Train                 | Train                 | Train                 | Beattie               | Beattie               | Beattie               | Beattie    |
| Argyll              | Sutherland       | Macquisten    | Macquisten    | Macquisten       | Macquisten       | Macquisten            | Macquisten            | Macquisten            | Macquisten            | Macquisten            | Sutherland       | Macquisten            | Macquisten            | McCallum              | McCallum              | McCallum              | McCallum              | McCallum              | McCallum   |
| Renfrewshire E      | Johnstone        | MacRobert     | MacRobert     | Douglas-Hamilton | Douglas-Hamilton | Douglas-Hamilton      | Douglas-Hamilton      | Douglas-Hamilton      | Douglas-Hamilton      | Douglas-Hamilton      | Johnstone        | Douglas-Hamilton      | Douglas-Hamilton      | Lloyd                 | Lloyd                 | Lloyd                 | Lloyd                 | Lloyd                 | Lloyd      |
| Dunbartonshire      | Raeburn          | Brooke        | Brooke        | Brooke           | Brooke           | Thom                  | Cochrane              | Cochrane              | Cochrane              | Cassells              | Raeburn          | Cassells              | Cassells              | Cassells              | McKinlay              | McKinlay              | McKinlay              | McKinlay              | McKinlay   |
| Lanark              | Elliot           | Dickson       | Dickson       | Dickson          | Dickson          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Elliot           | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Douglas-Home          | Steele     |
| Glasgow Partick     | Balfour          | McKinlay      | McKinlay      | McKinlay         | McKinlay         | MacAndrew             | MacAndrew             | MacAndrew             | Young                 | Young                 | Balfour          | Young                 | Young                 | Young                 | Young                 | Young                 | Young                 | Young                 | Young      |
| Lanarkshire N       | McLaren          | Lee           | Lee           | Lee              | Lee              | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | McLaren          | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Anstruther-Gray       | Herbison   |
| Renfrewshire W      | Greig            | Forgan        | Forgan        | Forgan           | -->              | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Greig            | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scrymgeour-Wedderburn | Scollan    |
| Glasgow Maryhill    | Mitchell-Thomson | Clarke        | Clarke        | Clarke           | Clarke           | Jamieson              | Jamieson              | Jamieson              | Davidson              | Davidson              | Mitchell-Thomson | Davidson              | Davidson              | Davidson              | Davidson              | Davidson              | Davidson              | Davidson              | Hannan     |
| Motherwell          | Nelson           | Barr          | Barr          | Barr             | Barr             | Ormiston              | Ormiston              | Ormiston              | Walker                | Walker                | Nelson           | Walker                | Walker                | Walker                | Walker                | Walker                | Walker                | McIntyre              | Anderson   |
| Greenock            | Collins          | -->           | -->           | -->              | -->              | -->                   | -->                   | -->                   | -->                   | Gibson                | -->              | Gibson                | Gibson                | Gibson                | McNeil                | McNeil                | McNeil                | McNeil                | McNeil     |
| Glasgow Camlachie   | Mackinder        | Stephen?      | Stephen?      | Stephen?         | Stephen?         | Stevenson             | Stevenson             | Stevenson             | Stephen               | Stephen               | Mackinder        | Stephen               | Stephen               | Stephen               | Stephen               | Stephen               | Stephen               | Stephen               | Stephen    |
| Bothwell            | MacDonald        | Sullivan      | Sullivan      | Sullivan         | Sullivan         | Shaw                  | Shaw                  | Shaw                  | Welsh                 | Welsh                 | Robertson        | Welsh                 | Welsh                 | Welsh                 | Welsh                 | Welsh                 | Welsh                 | Welsh                 | Timmons    |
| Coatbridge          | Buchanan         | Welsh         | Welsh         | Welsh            | Welsh            | Templeton             | Templeton             | Templeton             | Barr                  | Barr                  | Buchanan         | Barr                  | Barr                  | Barr                  | Barr                  | Barr                  | Barr                  | Barr                  | Mann       |
| Glasgow Springburn  | Macquisten       | G. Hardie     | G. Hardie     | G. Hardie        | G. Hardie        | Emmott                | Emmott                | Emmott                | G. Hardie             | G. Hardie             | Macquisten       | A. Hardie             | A. Hardie             | A. Hardie             | A. Hardie             | A. Hardie             | A. Hardie             | A. Hardie             | Forman     |
| Kilmarnock          | Shaw             | Aitchison     | Climie        | Aitchison        | -->              | -->                   | -->                   | Lindsay               | Lindsay               | Lindsay               | Shaw             | Lindsay               | Lindsay               | Lindsay               | Lindsay               | Lindsay               | -->                   | -->                   | Shaw       |
| Rutherglen          | Rodger           | Wright        | Wright        | Wright           | Hardie           | Moss                  | Moss                  | Moss                  | Chapman               | Chapman               | Rodger           | Chapman               | Chapman               | Chapman               | Chapman               | Chapman               | Chapman               | Chapman               | McAllister |
| Glasgow Tradeston   | V. Henderson     | T. Henderson  | T. Henderson  | T. Henderson     | T. Henderson     | McLean                | McLean                | McLean                | Henderson             | Henderson             | V. Henderson     | Henderson             | Henderson             | Henderson             | Henderson             | Henderson             | Henderson             | Henderson             | Rankin     |
| Ayrshire South      | Brown            | Brown         | Brown         | Brown            | Brown            | MacAndrew             | MacAndrew             | MacAndrew             | Brown                 | Brown                 | Brown            | Brown                 | Sloan                 | Sloan                 | Sloan                 | Sloan                 | Sloan                 | Sloan                 | Sloan      |
| Glasgow St. Rollox  | Oliphant-Murray  | Stewart       | Stewart       | Stewart          | Leonard          | Leonard               | Leonard               | Leonard               | Leonard               | Leonard               | Oliphant-Murray  | Leonard               | Leonard               | Leonard               | Leonard               | Leonard               | Leonard               | Leonard               | Leonard    |
| Glasgow Shettleston | Adair            | Wheatley      | Wheatley      | McGovern         | McGovern         | -->                   | -->                   | -->                   | -->                   | -->                   | Adair            | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->        |
| Paisley             | McCallum         | Welsh         | Welsh         | Welsh            | Welsh            | Maclay                | Maclay                | Maclay                | Maclay                | Maclay                | McCallum         | Maclay                | Maclay                | Maclay                | Maclay                | Maclay                | Maclay                | Maclay                | Baldwin    |
| Dumbarton Burghs    | Taylor           | Kirkwood      | Kirkwood      | Kirkwood         | Kirkwood         | -->                   | -->                   | -->                   | -->                   | -->                   | Taylor           | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->        |
| Glasgow Bridgeton   | Scott            | Maxton        | Maxton        | Maxton           | Maxton           | -->                   | -->                   | -->                   | -->                   | -->                   | Scott            | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->        |
| Glasgow Gorbals     | Barnes           | Buchanan      | Buchanan      | Buchanan         | Buchanan         | -->                   | -->                   | -->                   | -->                   | -->                   | Barnes           | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->        |
| Glasgow Govan       | Maclean          | -->           | -->           | -->              | -->              | -->                   | -->                   | -->                   | -->                   | -->                   | Maclean          | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->                   | -->        |
| Hamilton            | Graham           | Graham        | Graham        | Graham           | Graham           | Graham                | Graham                | Graham                | Graham                | Graham                | Graham           | Graham                | Graham                | Graham                | Graham                | Graham                | Fraser                | Fraser                | Fraser     |



row_idx: 2
col_idx: 4
col_name: 30
label: Alexander