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

[EX Q]: The cytoskeleton holds cell organelles in place within the cytoplasm.
[EX A]: What part of the cell holds cell organelles in place within the cytoplasm?

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

[EX Q]: A mushroom is the fruiting body that occurs after two hyphae mate and form a mycelium with sporangia.
[EX A]:
What is the fruiting body that occurs after two hyphae mate and form a mycelium with sporangia?