CREATE TABLE table_name_96 (year NUMBER, release_air_date VARCHAR2, role VARCHAR2, radio_station_production_company VARCHAR2)

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?
SELECT SUM(year) FROM table_name_96 WHERE role = "narrator" AND radio_station_production_company = "bbc audiobooks" AND release_air_date = "13 november 2008"
SELECT SUM("year") FROM "table_name_96" WHERE "13 november 2008" = "release_air_date" AND "bbc audiobooks" = "radio_station_production_company" AND "narrator" = "role"