instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In March 1992 'Deeply Dippy' was the only number one hit for which group?
answer:
deeply dippy


question:
What currency is used on Christmas Island?
answer:
christmas island


question:
Who wrote the Billy Bunter books?
answer:

billy bunter