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]: exhibitions
[A]: The painting the Girl with the Pearl Earring is by which artist?


[Q]: celebrities
[A]: Which of the core cast of the TV series Friends also appeared in the 2000 film The Whole Nine Yards with Bruce Willis?


[Q]: metropolitan_transit
[A]:
Upminster and Ealing Broadway are respectively the eastern and western termini or which London Underground line?