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

[Q]: Cancer occurs most often in adults over fifty age.
[A]: Cancer occurs most often in adults over what age?


[Q]: The mass remains the same does burning matter affect its mass.
[A]: How does burning matter affect its mass?


[Q]: Fission is the radioactive process used in nuclear power plants and one type of nuclear bomb.
[A]:
What is the radioactive process used in nuclear power plants and one type of nuclear bomb?