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

### Instruction:
What is the number for the interview in Illinois when the preliminary is less than 8.558?

### Inputs:
table_name: table, columns: ['Country', 'Preliminary', 'Interview', 'Swimsuit', 'Evening Gown', 'Average']

### Response:
SELECT SUM Interview FROM table WHERE Country = illinois AND Preliminary < 8.558