instruction:
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.
question:
Category: HISTORIC QUOTES 
Clue: This great Prussian king is credited with saying, "An army, like a serpent, travels on its belly"
answer:
frederick the great


question:
Category: THE NATIONAL TOY HALL OF FAME 
Clue: Initial sales for it were sluggish, but demonstrations of how it walked down stairs at Gimbels made it walk off shelves
answer:
a slinky


question:
Category: ASIAN COUNTRIES 
Clue: The DMZ between these 2 Asian nations extends 1.2 miles on each side of the 38th parallel
answer:

north & south korea