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.

[Q]: Category: 4-F 
Clue: 2-word term for secretaries, bookkeepers, receptionists, etc.
[A]: office staff


[Q]: Category: ELEMENT NAMES 
Clue: Found by Carl Gustav Mosander, terbium is named for Ytterby, a village in this country
[A]: sweden


[Q]: Category: THEATRE 
Clue: In Eugene O'Neill's play "Marco Millions", he marries a fat, commonplace Venetian
[A]:
marco polo