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_30 (year INTEGER, role VARCHAR, title VARCHAR)
### Question:
What's the average year for the Role of alvin seville simon seville david 'dave' seville, and a Title of the chipmunk adventure?
### Answer:
SELECT AVG(year) FROM table_name_30 WHERE role = "alvin seville simon seville david 'dave' seville" AND title = "the chipmunk adventure"