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

[EX Q]: The location of an object in a frame of reference is called position.
[EX A]: The location of an object in a frame of reference is called what?

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

[EX Q]: The simplest type of battery contains single cell.
[EX A]:
The simplest type of battery contains what?