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

[EX Q]: A pregnant woman should avoid toxic substances while pregnant.
[EX A]: What should a pregnant woman avoid while pregnant?

[EX Q]: Some plants have stolons, or stems, that run along the ground and are commonly called runners.
[EX A]: Some plants have stolons, or stems, that run along the ground and are commonly called what?

[EX Q]: A basin is a three dimensional snycline.
[EX A]:
What is a three dimensional snycline?