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

[Q]: Aerobic exercise helps improve the cardiovascular system, while anaerobic exercise causes muscles to get bigger and stronger.
[A]: Aerobic exercise helps improve the cardiovascular system, while what exercise causes muscles to get bigger and stronger?


[Q]: Most hormones are produced by the endocrine system.
[A]: Most hormones are produced by which human organ system?


[Q]: We consider ceres to be a dwarf planet.
[A]:
What kind of planet do we consider ceres to be?