instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What style of facial hair was famously worn by American Civil War general Ambrose Burnside?
answer:
ambrose burnside


question:
In March 1992 'Deeply Dippy' was the only number one hit for which group?
answer:
deeply dippy


question:
Who joined the Eggheads team in 2008, having won Are You An Egghead?
answer:

eggheads