user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'International competitions' regarding 'Tomás de Teresa'
Table Content:
| Year | Competition | Venue | Position | Event | Notes |
| --- | --- | --- | --- | --- | --- |
| Representing Spain | Representing Spain | Representing Spain | Representing Spain | Representing Spain | Representing Spain |
| 1987 | European Junior Championships | Birmingham, United Kingdom | 1st | 800 m | 1:49.37 |
| 1988 | European Indoor Championships | Budapest, Hungary | 16th (h) | 800 m | 2:00.65 |
| 1988 | Olympic Games | Seoul, South Korea | 26th (qf) | 800 m | 1:48.01 |
| 1989 | European Indoor Championships | The Hague, Netherlands | 12th (sf) | 800 m | 1:52.54 |
| 1989 | World Indoor Championships | Budapest, Hungary | 16th (sf) | 800 m | 1:50.19 |
| 1989 | World Cup | Barcelona, Spain | 8th | 800 m | 1:47.94 |
| 1990 | European Indoor Championships | Glasgow, United Kingdom | 2nd | 800 m | 1:47.22 |
| 1990 | European Championships | Split, Yugoslavia | 14th (sf) | 800 m | 1:48.73 |
| 1991 | World Indoor Championships | Seville, Spain | 2nd | 800 m | 1:47.82 |
| 1991 | World Championships | Tokyo, Japan | 8th | 800 m | 1:47.65 |
| 1992 | Olympic Games | Barcelona, Spain | 7th (sf) | 800 m | 1:46.08 |
| 1993 | World Championships | Stuttgart, Germany | 22nd (h) | 800 m | 1:49.79 |
| 1994 | European Championships | Helsinki, Finland | 3rd | 800 m | 1:46.57 |
| 1994 | World Cup | London, United Kingdom | 6th | 800 m | 1:48.041 |
| 1995 | World Championships | Gothenburg, Sweden | 34th (h) | 800 m | 1:49.07 |


Question
Where did Tomás de Teresa perform the best in his career?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Tomás de Teresa placed 1st in 1986 at the European Junior Championships in Birmingham, United Kingdom."]