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 simplicity, answers should be in all lower cased letters.
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Question: Category: MUSEUMS 
Clue: The Conspiracy Museum opened in this U.S. city in 1995

Answer: dallas


Question: Category: U.S. RIVERS 
Clue: The name of this river, famous in song, may be a corruption of the Spanish for "little Saint John"

Answer: the swanee


Question: Category: RANKS & TITLES 
Clue: Owain Glyndwr, who died circa 1416, was the last native of his country to claim this title

Answer:
prince of wales