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

### Instruction:
What Competition has an Event of 4x100 m relay and has the Time of 38.89?

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

### Response:
SELECT Competition FROM table WHERE Event = 4x100 m relay AND Time = 38.89