Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Competition | Venue | Position | Event | Time |
| --- | --- | --- | --- | --- | --- |
| 1982.0 | European Championships | Athens, Greece | 6th | 4x400 m relay | 3:03.21 |
| 1983.0 | World Championships | Helsinki, Finland | 5th | 4x400 m relay | 3:05.10 |
| 1984.0 | Olympic Games | Los Angeles , United States | 5th | 4x400 m relay | 3:01.44 |
| 1986.0 | European Championships | Stuttgart , West Germany | Semi-Finals | 400 m | 45.69 |
| 1986.0 | European Championships | Stuttgart , West Germany | 4th | 4x400 m relay | 3:01.37 |
| 1990.0 | European Championships | Split , Yugoslavia | 4th | 4x400 m relay | 3:01.78 |
Question:
What Event has a Competition of world championships?
Answer:
4x400 m relay