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

[EX Q]: Unicellular eukaryotes are protists normally.
[EX A]: What type of eukaryotes are protists normally?

[EX Q]: Half-life property of carbon and other elements can be used to date fossils and rocks, among other things.
[EX A]: What property of carbon and other elements can be used to date fossils and rocks, among other things?

[EX Q]: Snow and hail are two types of frozen percipitation.
[EX A]:
What are two types of frozen percipitation?