input question: Determine the topic of the question. Question: "what is the role of heredity?" Topic:???
output answer: Heredity

Determine the topic of the question. Question: "what county is northville mi?" Topic:
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Answer: Northville, Michigan

Q: Determine the topic of the question. Question: "what president was theodore roosevelt?" Topic:
A: Theodore Roosevelt

Question: Determine the topic of the question. Question: "what are american people of japanese descent called?" Topic:
Answer: Japanese American

[Q]: Determine the topic of the question. Question: "what does Mazel tov! mean?" Topic:
****
[A]: Mazel tov

Problem: Given the question: Determine the topic of the question. Question: "how much does a gold bar weigh?" Topic:
++++++++++++++++++++++++++++++++
The answer is:
Gold bar