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: BRAND "O" 
Clue: You can read "Story O's" about this cookie on its website

Answer: oreos


Question: Category: IT'S A DOG'S LIFE 
Clue: Familiar to fans as "Marmaduke", this lovable breed was a favorite of Elvis, who had 2 at Graceland

Answer: a great dane


Question: Category: ROYALTY 
Clue: Denmark's Queen Margrethe II was born in this "wonderful, wonderful" Danish capital in 1940

Answer:
copenhagen