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

[EX Q]: Some viruses carry a few viral enzyme molecules within their capsids.
[EX A]: Some viruses carry a few viral enzyme molecules within their what?

[EX Q]: Digestion begins in the gastrovascular cavity.
[EX A]: Where does digestion begin?

[EX Q]: Meteorites, formed of split asteroids or planetary rocks, provide clues about our solar system.
[EX A]:
What astronomical phenomenon, formed of split asteroids or planetary rocks, provides clues about our solar system?