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

[EX Q]: Bees are naturalized on every continent except antarctica.
[EX A]: Bees are naturalized on every continent except which?

[EX Q]: Absorption is the process by which the substances you consume are taken up by the blood.
[EX A]: What is the process by which the substances you consume are taken up by the blood?

[EX Q]: Many ionic compounds with relatively large cations and a 1:1 cation:anion ratio have this structure, which is called the cesium chloride structure.
[EX A]:
Many ionic compounds with relatively large cations and a 1:1 cation:anion ratio have this structure, which is called the what?