Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
what is the venue when the event is 4x400 m relay and the competition is asian championships?

### Inputs:
table_name: table, columns: ['Year', 'Competition', 'Venue', 'Position', 'Event']

### Response:
SELECT Venue FROM table WHERE Event = 4x400 m relay AND Competition = asian championships