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

[Q]: Seismologists originally measured the intensity of an earthquake with the mercalli scale.
[A]: How did seismologists originally measure the intensity of an earthquake?


[Q]: A white dog has a puppy with white fur statement is an example of an inherited trait in a living thing.
[A]: Which statement is an example of an inherited trait in a living thing?


[Q]: Different media affect the speed of light.
[A]:
Different media affect what property of light?