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

[EX Q]: Which 20th century British prime minister had the longest surname ?
[EX A]: prime minister of the united kingdom

[EX Q]: In which bay is Alcatraz?
[EX A]: alcatraz island

[EX Q]: Earl Scruggs (1924-2012) pioneered and was master of the three-fingered technique for playing what?
[EX A]:
earl scruggs