Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Force times distance is the equation for work.

Answer: Force times distance is the equation for what?

Question: The metallic bond is responsible for the properties of metals.

Answer: What is responsible for the properties of metals?

Question: Combustion reactions involve the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide.

Answer:
What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide?