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: The female reproductive system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus.

Answer: What system consists of structures that produce eggs, secrete female sex hormones, and ultimately enable birth of a fetus?

Question: Sodium chloride is an odorless white solid that is harmless unless consumed in large quantities.

Answer: What is an odorless white solid that is harmless unless consumed in large quantities?

Question: A(n) exoplanet is often discovered because it causes a star to move or to dim.

Answer:
What celestial body is often discovered because it causes a star to move or to dim?