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: WORLD GEOGRAPHY 
Clue: This European grand duchy has 2 distinct land regions: the Ardennes & the Bon Pays
[A]: luxembourg


[Q]: Category: WHICH U.S. CABINET DEPARTMENT? 
Clue: The U.S. Geological Survey
[A]: department of the interior


[Q]: Category: WINDMILLS 
Clue: The first windmill built to produce this type of power was built in 1890
[A]:
electric