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: ENTERTAINMENT 
Clue: This title character who debuted in 1999 was created by former marine biology educator Steve Hillenburg
answer:
spongebob squarepants


question:
Category: THE STOCK MARKET 
Clue: In 2006 this Milwaukee-based co. announced its new stock symbol, "HOG", at a gathering in Sturgis, S.D.
answer:
harley-davidson


question:
Category: THE 16th CENTURY 
Clue: In 1582 the man born Ugo Buoncompagni proclaimed this solar dating system still used today
answer:

the gregorian calendar