instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What horse won the 2009 Grand National?
answer:
2009 grand national


question:
Released last month, People, Hell and Angels is a posthumous album made up of songs recorded by which artist in 1969 ?
answer:
angel


question:
Which author using the pen name Robert Markham wrote a James Bond book called 'Colonel Sun' after the death of Ian Fleming?
answer:

colonel sun