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_96 (year INTEGER, release_air_date VARCHAR, role VARCHAR, radio_station_production_company VARCHAR)
### Question:
Role of narrator, and a Radio Station/Production Company of bbc audiobooks, and a Release/Air Date of 13 november 2008 is what sum of the year?
### Answer:
SELECT SUM(year) FROM table_name_96 WHERE role = "narrator" AND radio_station_production_company = "bbc audiobooks" AND release_air_date = "13 november 2008"