Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.
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Question: Fact: amphibians undergo metamorphosis

Answer: When a frog is born, it has tiny gills so that it can breathe underwater, even though in adulthood it will?

Question: Fact: eagles eat rabbits

Answer: Large eared, small mammal preferred by bald eagles as prey?

Question: Fact: hydropower requires damming a river

Answer:
Diverting overflow from a reservoir through pipes generates?