[Q]: Determine the topic of the question. Question: "what are a and r reps?" Topic:
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[A]: Artists and repertoire

[Q]: Determine the topic of the question. Question: "how many countries have english as an official language?" Topic:
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[A]: List of countries where English is an official language

[Q]: Determine the topic of the question. Question: "who is the mayor of chicago 2011?" Topic:
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[A]: Chicago mayoral election, 2011

[Q]: Determine the topic of the question. Question: "what are the characteristics of an ethnic group?" Topic:
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[A]:
Ethnic group