Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: A(n) an ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.

A: What forms when the metal sodium gives up an electron to the nonmetal chlorine?
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Q: Gastric emptying is regulated by both the stomach and the duodenum.

A: Gastric emptying is regulated by both the stomach and what other digestive structure?
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Q: Oxygen and sulfur two types of atoms bond to form sulfate minerals.

A:
What two types of atoms bond to form sulfate minerals?
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