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

Q: Court Philippe Chatrier, which has stands named after Jacques Toto Brugnon, Jean Borotra, Henri Cochet, and Ren Lacoste, is the main court of an international tennis venue in which city?

A: stade roland garros
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Q: Albion is the oldest known name for which nation?

A: albion
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Q: The stars Betelgeuse, Rigel, Bellatrix, Mintaka, Alnilam, Mintaka, Alnitak, Alnitak and Saiph are found in which constellation?

A:
rigel
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