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

Q: Who wrote the novel 'Brideshead Revisited'?

A: brideshead revisited
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Q: The counties of Alameda, El Dorado, Fresno, Marin, Mariposa, Nevada, Orange, Riverside, Sacramento, San Bernardino, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Sonoma and Ventura are in what state of the USA?

A: santa clara, california
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Q: In which country was the 2006 FIFA World Cup held?

A:
2006 fifa world cup
****