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

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


[Q]: The best way humans can conserve water is to use less.
[A]: What's the best way humans can conserve water?


[Q]: If only one atom of a specific type is present a subscript is not used.
[A]:
If only one atom of a specific type is present what is not used?