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_70 (episodes INTEGER, region_1_release VARCHAR)
### Question:
What is the average episode that has September 11, 2007 as a region 1?
### Answer:
SELECT AVG(episodes) FROM table_name_70 WHERE region_1_release = "september 11, 2007"