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

[EX Q]: At a convergent plate boundary, when one plate is oceanic, there are large volcanoes.
[EX A]: At a convergent plate boundary, when one plate is oceanic, there are large what?

[EX Q]: Some compounds form rigid frameworks called crystals.
[EX A]: Some compounds form rigid frameworks called what?

[EX Q]: At the poles are temperatures the lowest.
[EX A]:
Where are temperatures the lowest?