instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
The Battle of Antietam was fought during which war?
answer:
battle of antietam


question:
Seymour is the family name of which English duke?
answer:
duke


question:
Which late British author of 'A Clockwork Orange' had a blue plaque unveiled in October 2012 at Manchester University, where he studied?
answer:

a clockwork orange