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: MAMMA MIA! 
Clue: In the Bible, the mother of John the Baptist
elizabeth

Category: MY CHARLEMAGNE MAN 
Clue: For 46 years Charlemagne was the king of these people who gave their name to a country
the franks

Category: PRESIDENTIAL FACTS 
Clue: Washington, D.C. locale where President Garfield was fatally shot

the railroad station