Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_51 (interview INTEGER, country VARCHAR, preliminary VARCHAR)
### Question:
What is the number for the interview in Illinois when the preliminary is less than 8.558?
### Answer:
SELECT SUM(interview) FROM table_name_51 WHERE country = "illinois" AND preliminary < 8.558