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: ANCIENT GREECE 
Clue: The Greeks had 4 national festivals: the Nemean Games, the Pythian Games, the Isthmian Games & these

Answer: the olympic games


Question: Category: WORLD RIVERS 
Clue: With 4, more national capitals are located on this river than any other river in the world

Answer: the danube


Question: Category: CLASSIC LITERATURE 
Clue: Chapter 1 of this book describes "a cyclone cellar, where the family could go in case one of those… whirlwinds arose"

Answer:
the wizard of oz