Table: doctor_who_audiobooks
Columns: story
target
title
author
reader
format
company
release_date
notes

Question: How many different release dates are there for the audio book with a story number 7?
SQL: SELECT COUNT("release_date") FROM doctor_who_audiobooks WHERE "story" = 7

Question: What's the title of the audio book with story number 91?
SQL: SELECT "title" FROM doctor_who_audiobooks WHERE "story" = 91

Question: When was the audio book with target number 069 69 released?
SQL: SELECT "release_date" FROM doctor_who_audiobooks WHERE "target" = '069 69'

Question: What's the format of the audio book titled The Mind Robber?
SQL: SELECT "format" FROM doctor_who_audiobooks WHERE "title" = 'The Mind Robber'