user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'International competitions' regarding 'Takashi Nagao'
Table Content:
| Year | Competition | Venue | Position | Event | Notes |
| --- | --- | --- | --- | --- | --- |
| 1977 | World Cup | Düsseldorf, Germany | 8th | 400 m hurdles | 52.10 |
| 1977 | Pacific Conference Games | Canberra, Australia | 3rd | 400 m hurdles | 53.30 |
| 1978 | Asian Games | Bangkok, Thailand | 2nd | 400 m hurdles | 50.98 |
| 1978 | Asian Games | Bangkok, Thailand | 1st | 4 × 400 m relay | 3:08.3 |
| 1979 | Asian Championships | Tokyo, Japan | 2nd | 400 m hurdles | 51.53 |
| 1981 | Asian Championships | Tokyo, Japan | 1st | 400 m hurdles | 50.32 |
| 1981 | World Cup | Rome, Italy | 8th | 400 m hurdles | 51.95 |
| 1981 | World Cup | Rome, Italy | 9th | 4 × 400 m relay | 3:09.93 |
| 1982 | Asian Games | New Delhi, India | 1st | 400 m hurdles | 50.60 |


Question
In what events did Takashi Nagao compete in at the 1981 World Cup?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Takashi Nagao played the 400 m hurdles and the 4 × 400 m at the 1981 World Cup."]