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

Input: Consider Input: Sporopollenin protects the pollen of seed plants and spores of seedless plants.

Output: What protects the pollen of seed plants and spores of seedless plants?


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

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


Input: Consider Input: Change in momentum in an object is equivalent to impulse .


Output: Change in momentum in an object is equivalent to what other measurement?