user: Question: THe audio book with ISBN 978-1-4084-6879-1 is read by whom?
Columns: ['#', 'Title', 'Author', 'Doctor', 'Featuring', 'Read by', 'Published', 'ISBN']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Pest Control', 'Peter Anghelides', '10th', 'Donna Noble', 'David Tennant', '8 May 2008', 'ISBN 978-1-4056-7819-3']
SQL:

assistant: SELECT "Read by" FROM "Table" WHERE "ISBN" = 'ISBN 978-1-4084-6879-1';