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_24399615_4 (episode_no INTEGER, cable_rank VARCHAR)
### Question:
What episode number had a cable ranking of 8?
### Answer:
SELECT MIN(episode_no) FROM table_24399615_4 WHERE cable_rank = "8"