Please answer this: Determine the topic of the question. Question: "what are some chinese inventions?" Topic:
++++++++
Answer: List of Chinese inventions

Problem: Determine the topic of the question. Question: "what is a league in the sea?" Topic:

A: League (unit)

Problem: Given the question: Determine the topic of the question. Question: "when does v start?" Topic:
++++++++++++++++++++++++++++++++
The answer is:
V (2009 TV series)

input question: Determine the topic of the question. Question: "Who Moved My Cheese Synopsis?" Topic:???
output answer: Who Moved My Cheese?

Determine the topic of the question. Question: "where does the expression "knocking on wood" come from?" Topic:
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Answer: Knocking on wood

Q: Determine the topic of the question. Question: "how is hydrogen produced?" Topic:
A:
Hydrogen production