instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
According to folklore, what was the name of the monster slain by 'Beowulf'?
answer:
beowulf


question:
Billy the Kid was a native of which US state?
answer:
billy


question:
Romantic Cello Concertos is a 2009 CD by which English cellist?
answer:

cello