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

### Instruction:
What were the interview subjects on those occasions where Bai Ling was the cover model?

### Inputs:
table_name: table, columns: ['Date', 'Cover model', 'Centerfold model', 'Interview subject', '20 Questions', 'Pictorials']

### Response:
SELECT Interview subject FROM table WHERE Cover model = Bai Ling