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: ROYALTY 
Clue: The last king of the Hellenes, he was the second to bear this name

Answer: king constantine ii


Question: Category: THE 20th CENTURY 
Clue: In the 1940s Franklin Roosevelt coined this term in reference to all the countries allied against the Axis powers

Answer: united nations


Question: Category: 19TH CENTURY FICTION 
Clue: The 1853 novel "Clotel, or The President's Daughter" alleges that this man had an affair with a slave

Answer:
thomas jefferson