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

Example Input: Lichens are not a single organism, but rather an example of a mutualism.
Example Output: Lichens are not a single organism, but rather an example of a what?

Example Input: A collapsing nebula leads to nuclear fusion process.
Example Output: A collapsing nebula leads to what process?

Example Input: Dentists occasionally use metallic mixtures called amalgams for fillings.
Example Output:
Dentists occasionally use metallic mixtures called amalgams for what?