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

[Q]: Carbon dioxide is an example of a material that easily undergoes sublimation.
[A]: Carbon dioxide is an example of a material that easily undergoes what?


[Q]: Present-day plants that have a complex vascular tissue system are called vasuluar plants.
[A]: Present-day plants that have a complex vascular tissue system are called what kind of plants?


[Q]: Solid takes neither the shape nor the volume of its container.
[A]:
What state of matter takes neither the shape nor the volume of its container?