user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'MPs since 1885' regarding 'Berwick-upon-Tweed (UK Parliament constituency)'
Table Content:
| Election | Election | Member | Party |
| --- | --- | --- | --- |
| - | 1885 | Edward Grey | Liberal |
| - | 1916 by-election | Francis Blake | Liberal |
| - | 1922 | Hilton Philipson | National Liberal |
| - | 1923 by-election | Mabel Philipson | Conservative |
| - | 1929 | Alfred Todd | Conservative |
| - | 1935 | Hugh Seely | Liberal |
| - | 1941 by-election | George Grey | Liberal |
| - | 1944 by-election | William Beveridge | Liberal |
| - | 1945 | Robert Thorp | Conservative |
| - | 1951 | Antony Lambton | Conservative |
| - | 1973 by-election | Sir Alan Beith | Liberal |
| - | 1988 | Sir Alan Beith | Liberal Democrats |
| - | 2015 | Anne-Marie Trevelyan | Conservative |


Question
During which year's election did Anne-Marie Trevelyan win the Berwick-upon-Tweed seat, and who preceded her in that role?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Since 2015, Berwick-upon-Tweed´s MP has been Anne-Marie Trevelyan of the Conservative Party, who succeeded the longest serving Liberal Democrat MP Sir Alan Beith."]