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

[EX Q]: Spring tides are created when the sun and moon's tides match.
[EX A]: Which type of tides are created when the sun and moon's tides match?

[EX Q]: Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.
[EX A]: What disease is unpreventable in the type one form but may be prevented by diet if it is of the second type?

[EX Q]: Band theory theory can explain virtually all the properties of metals.
[EX A]:
What theory can explain virtually all the properties of metals?