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.

influence
Which Florentine painter 1535-1607 used the name Bronzino after the death of his 'uncle'?

common
Alt, Bock, Dunkel and Helles are German varieties of what?

user

Who was kidnapped and assassinated by the left-wing movement 'Brigate Rosse' in 1978?