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.

Category: PRESIDENTIAL PETS 
Clue: As a warning to Congress, president James Garfield named his dog this
veto

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

Category: PRESIDENTIAL FAMILIES 
Clue: The last 2 U.S. presidents to have only one child; both served in the 20th century

clinton & truman

