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

Q: Which SF author wrote The Day it Rained Forever?

A: the day it rained forever
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Q: Which motor manufacturer produces the Duster model?

A: dacia duster
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Q: Explorer, Chrome, Safari and Firefox are among the most globally popular what (in early 2000s)?

A:
safari
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