Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Bound for Glory is the 1943 autobiography of which singer-songwriter?
bound for glory

Which strong man appears in the Bible in the Book of Judges?
book of judges

And Another Thing... by Eoin Colfer, published in 2009, eight years after the death of the author of the first five, is described as the sixth in which trilogy of books?
and another thing...