user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Elections in the 1960s' regarding 'Bassetlaw (UK Parliament constituency)'
Table Content:
| Party | Party | Candidate | Votes | % | ± |
| --- | --- | --- | --- | --- | --- |
| - | Labour | Joe Ashton | 21,394 | 49.64 | 11.99 |
| - | Conservative | Jim Lester | 20,654 | 47.92 | +9.55 |
| - | Independent | Thomas Lynch | 1,053 | 2.44 | n/a |
| Majority | Majority | Majority | 740 | 1.72 | 21.55 |
| Turnout | Turnout | Turnout | 43,101 | - | - |
| - | Labour hold | Labour hold | Swing | - | - |


Question
Which seat was retained for the Labour Party by Joe Ashton with what percentage of a majority?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["The seat of Bassetlaw was retained for the Labour Party by Joe Ashton with a 1.72% majority."]