Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
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?

### Inputs:
table_name: table, columns: ['Year', 'Role', 'Author', 'Radio Station/Production Company', 'Release/Air Date']

### Response:
SELECT SUM Year FROM table WHERE Role = narrator AND Radio Station/Production Company = bbc audiobooks AND Release/Air Date = 13 november 2008