Given a statement, generate a question such that the answer is contained in that statement.

Q: Binoculars are optical tools.

A: What are optical tools?
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Q: Bioterrorism is another potential danger in the world.

A: What is another potential danger in the world?
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Q: simple green plants play significant roles as producers in water ecosystems

A:
What ecosystems do green plants play a significant role in?
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