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.

[EX Q]: geology
[EX A]: What type of rock is granite?

[EX Q]: time
[EX A]: In what country did the Boxer War, or Boxer Rebellion, happen?

[EX Q]: music
[EX A]:
What was the title of Bob the Builder`s second UK number one hit single?