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

Example Input: Compounds containing an atom of nitrogen element, bonded in a hydrocarbon framework, are classified as amines.
Example Output: Compounds containing an atom of what element, bonded in a hydrocarbon framework, are classified as amines?

Example Input: Together, the muscular and skeletal organs are known as the musculoskeletal system.
Example Output: Together, the muscular and skeletal organs are known as what?

Example Input: Transient pseudopodia are temporary feet that protists have called.
Example Output:
What are temporary feet that protists have called?