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

Example Input: Electric motors transform electrical energy into kinetic energy.
Example Output: Electric motors transform electrical energy into what other form of energy?

Example Input: Present-day plants that have a complex vascular tissue system are called vasuluar plants.
Example Output: Present-day plants that have a complex vascular tissue system are called what kind of plants?

Example Input: If an air mass forms over an ocean it is called a maritime air mass.
Example Output:
If an air mass forms over an ocean it is called what type of air mass?