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

Q: Hookworms infest the intestines.

A: What part of the body do hookworms infest?
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Q: Moving air masses is the main reason for weather change.

A: What is the main reason for weather change?
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Q: Contributing to the blood-brain barrier is one of the jobs of glial cells, central nervous system support neurons in what system.

A:
Contributing to the blood-brain barrier is one of the jobs of glial cells, which support neurons in what system?
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