Given a broad category, generate a trivia-type question based on a specific entity in that category. The question should be non-ambiguous. External resources such as Wikipedia could be used to obtain the facts.

[Q]: type
[A]: Bayer Designations relate to which celestial bodies?


[Q]: medicine
[A]: The bacterium Bordetella pertussis is the causative agent for which childhood disease?


[Q]: interests
[A]:
What is a collector of coins and medals called?