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

[EX Q]: The cell starting meiosis is called a primary oocyte.
[EX A]: The cell starting meiosis is called a what?

[EX Q]: Lipids are available to the body from three sources.
[EX A]: Lipids are available to the body from how many sources?

[EX Q]: Amphibians may attract mates with calls or scents.
[EX A]:
Amphibians may attract mates with what?