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

### Instruction:
Who were the 3rd couple that were viewed by 4.89 million viewers?

### Inputs:
table_name: table, columns: ['#', 'Airdate', 'No. of couples', '1st couple', '2nd couple', '3rd couple', '4th couple', 'Viewers (millions)', 'ITV1 weekly ranking']

### Response:
SELECT 3rd couple FROM table WHERE Viewers (millions) = 4.89