instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which British Prime Minister married Clementine Hozier on September 12th 1908?
answer:
clementine churchill


question:
What is the largest city in Bavaria?
answer:
bavaria


question:
What is the first book of the Bible attributed to a prophet?
answer:

bible