instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Where is the Barbary Coast?
answer:
barbary coast


question:
Who composed the opera 'Albert Herring' in 1947?
answer:
albert herring


question:
Which is these is the real name of a famous 20th Century Graffiti artist?
answer:

graffiti