user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'International competitions' regarding 'Helen Slatter'
Table Content:
| Year | Competition | Venue | Position | Event | Notes |
| --- | --- | --- | --- | --- | --- |
| Representing Great Britain / England | Representing Great Britain / England | Representing Great Britain / England | Representing Great Britain / England | Representing Great Britain / England | Representing Great Britain / England |
| 1988 | Olympic Games | Seoul, South Korea | 22nd | 200 m backstroke | 2:21.66 |
| 1990 | Commonwealth Games | Auckland, New Zealand | 9th | 100 m backstroke | 1:06.17 |
| 1991 | World Championships | Perth, Australia | 14th | 100 m backstroke | 1:05.20 |
| 1991 | World Championships | Perth, Australia | 11th | 200 m backstroke | 2:16.83 |
| 1991 | World Championships | Perth, Australia | 13th | 400 m medley | 4:55.77 |
| 1992 | Olympic Games | Barcelona, Spain | 24th | 200 m butterfly | 2:20.45 |
| 1992 | Olympic Games | Barcelona, Spain | 26th | 200m medley | 2:22.04 |
| 1992 | Olympic Games | Barcelona, Spain | 23rd | 400 m medley | 4:58.24 |
| 1994 | Commonwealth Games | Victoria, Canada | 10th | 100 m backstoke | 1:04.70 |
| 1994 | Commonwealth Games | Victoria, Canada | 12th | 100 m butterfly | 1:04.55 |
| 1994 | Commonwealth Games | Victoria, Canada | 5th | 200 m butterfly | 2:16.15 |
| 1994 | Commonwealth Games | Victoria, Canada | 9th | 200 m medley | 2:21.46 |
| 1994 | Commonwealth Games | Victoria, Canada | 7th | 400 m medley | 4:58.33 |
| 1996 | Olympic Games | Atlanta, United States | 13th | 100 m backstroke | 1:03.61 |
| 1996 | Olympic Games | Atlanta, United States | 13th | 4 × 100 m medley | 1:03.87 |
| 1998 | Commonwealth Games | Kuala Lumpur, Malaysia | 12th | 100 m backstroke | 1:04.98 |


Question
What was Helen Slatter's backstroke performance like in 1991 and 1996?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Helen Slatter finished 11th in the 200m backstroke at the 1991 World Championships and 13th in the 100m backstroke at the 1996 Olympic Games."]