user: Question: What is Title, when Doctor is 06 Sixth Doctor, and when Company is Big Finish?
Columns: ['Title', 'Writer', 'Doctor', 'Format', 'Company', 'release date']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Doctor Who and the Pescatons', 'Pemberton, Victor Victor Pemberton', '04 Fourth Doctor', 'LP Cassette', 'Decca', '1976-07-01 July 1976']
SQL:

assistant: SELECT "Title" FROM "Table" WHERE "Doctor" = '06 Sixth Doctor' AND "Company" = 'Big Finish';