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

Example Input: Gastric emptying is regulated by both the stomach and the duodenum.
Example Output: Gastric emptying is regulated by both the stomach and what other digestive structure?

Example Input: The pupil is the name of the black opening in the eye that lets light enter.
Example Output: What is the name of the black opening in the eye that lets light enter?

Example Input: Carbon 14 isotope of carbon is typically used to date ancient items.
Example Output:
What isotope of carbon is typically used to date ancient items?