Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Example Input: Which model was married to photographer David Bailey for 10 years, from 1975?
Example Output: david bailey

Example Input: Seymour is the family name of which English duke?
Example Output: duke

Example Input: What was the operational squadron number of the Dambusters?
Example Output:
the dam busters