Given a scientific passage and an answer, generate a question for the given answer.

Example Input: Passage: David Remahl. Polygenic traits result in a distribution that resembles a bell-shaped curve . The creator of this work allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification. Answer: bell-shaped
Example Output: Polygenic traits result in a distribution that resembles a curve. what is the shape of the curve?

Example Input: Passage: Nuclear changes occur with a simultaneous release of energy. Where does this energy come from? If we could precisely measure the masses of the reactants and the products of a nuclear reaction, we would notice that the amount of mass drops slightly in the conversion from reactants to products. Consider the following nuclear reaction, in which the molar mass of each species is indicated to four decimal places:. Answer: energy
Example Output: Nuclear changes occur with a simultaneous release of what, and a slight drop in mass?

Example Input: Passage: Continental glaciers are large ice sheets that cover relatively flat ground. These glaciers flow outward from where the greatest amounts of snow and ice accumulate. Answer: continental glaciers
Example Output:
What are large sheets of ice that cover relatively flat ground called?