instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which Beatles song was also recorded by Peter Sellers?
answer:
the beatles


question:
What name is given to the disease whereby parasites can change the behaviour of rats and mice, making them drawn to rather than fearful of the scent of cats?
answer:
cat


question:
What is the Army equivalent to a Group Captain in the R.A.F.?
answer:

british army