instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In May 1940, who became British Prime Minister after the resignation of Neville Chamberlain?
answer:
prime minister of the united kingdom

question:
'Arthur Clennam', 'Jeremiah Flintwinch', and 'Edward Sparkler' are all characters in which Dickens' novel?
answer:
arthur clennam

question:
What is the more common name for the dog known as the Alsatian?
answer:
dog