instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Who directed the 1988 film 'Beetle Juice'?
answer:
beetlejuice


question:
In which shipping forecast area are the Channel Islands?
answer:
channel islands


question:
Which British Prime Minister said of Downing Street 'One of the most precious jewels in the national heritage'?
answer:

prime minister of the united kingdom