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

[EX Q]: Low energy causes waves to bring sand up onto the beach during summers.
[EX A]: What causes waves to bring sand up onto the beach during summers?

[EX Q]: The refrigerator door contains iron of the following statements best explains why magnets usually stick to a refrigerator door.
[EX A]: Which of the following statements best explains why magnets usually stick to a refrigerator door?

[EX Q]: One domain is common in two eukaryotic proteins.
[EX A]:
What is common in two eukaryotic proteins?