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.
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Question: Category: CLASSICAL MUSICIANS 
Clue: In 1793, Haydn wrote he will be "one of Europe's finest composers, & I shall be proud to be called his teacher"

Answer: ludwig van beethoven


Question: Category: WORLD GEOGRAPHY 
Clue: The world's highest city of over 1 million people sits at about 12,000 feet in these mountains

Answer: the andes


Question: Category: GREEK MYTHOLOGY 
Clue: Pytho, the site of Apollo's oracle, was renamed this after Apollo appeared disguised as a sea creature

Answer:
delphi