instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which brothers own the Daily Telegraph?
answer:
the daily telegraph


question:
Which Chuck Berry song is performed by Marty McFly at the end of the film Back to the Future?
answer:
back to the future


question:
What is the SI derived unit of electrical capacitance?
answer:

capacitance