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

[EX Q]: In science, something that always applies under the same conditions is called a scientific law.
[EX A]: In science, what do you call something that always applies under the same conditions?

[EX Q]: The majority of arthropods live on land.
[EX A]: Where do the majority of arthropods live?

[EX Q]: Researchers have identified the receptor proteins for all of the tastes except salty.
[EX A]:
Researchers have identified the receptor proteins for all of the tastes except which?