Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

The Bryce Canyon and Zion National Parks are in which US state?
bryce canyon national park

In which Shakespeare play do the characters Ajax, Achilles and Ulysses appear?
achilles

The Appenines is a mountain range that runs for 870 miles in what country?

apennine mountains