[Q]: Determine the topic of the question. Question: "what glows in the dark?" Topic:
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[A]: Glow-in-the-dark

[Q]: Determine the topic of the question. Question: "what is the use of a sales invoice??" Topic:
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[A]: Invoice

[Q]: Determine the topic of the question. Question: "when can you use a defibulator?" Topic:
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[A]: Defibrillation

[Q]: Determine the topic of the question. Question: "what was bernie madoff selling?" Topic:
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[A]:
Bernard Madoff