You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.
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Question: Category: POP MUSIC 
Clue: In 1989, Roger Daltrey, Pete Townshend & John Entwistle reunited as this group for an American tour

Answer: the who


Question: Category: ALL ABOARD AMTRAK 
Clue: The Keystone Route serves NYC, Philly & this capital; Three Mile Island's nearby if you're the nuclear plant gawker type

Answer: harrisburg


Question: Category: U.S. HISTORY 
Clue: Geronimo was buried in this state in 1909, 2 years after statehood

Answer:
oklahoma