instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In which war was the Battle of Bunker Hill?
answer:
battle of bunker hill


question:
Which film director won the Oscar for Best Picture for the film 12 Years a Slave in 2013?
answer:
12 years a slave


question:
In which sport did South African Chad Le Clos win gold at the 2012 Olympic Games?
answer:

chad le clos