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

Example Input: The bones of the newborn skull are not fully ossified and are separated by large areas called fontanelles.
Example Output: The bones of the newborn skull are not fully ossified and are separated by large areas called what?

Example Input: A(n) an ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.
Example Output: What forms when the metal sodium gives up an electron to the nonmetal chlorine?

Example Input: Rapid decrease is a trend that is occurring involving the extent of arctic sea ice in summer.
Example Output:
What trend is occurring involving the extent of arctic sea ice in summer?