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

Example Input: Living organisms are made up of biochemical type of carbon-based compounds.
Example Output: Living organisms are made up of what type of carbon-based compounds?

Example Input: The values of strangeness assigned to various particles are based on decay systematics.
Example Output: The values of strangeness assigned to various particles are based on what?

Example Input: Line graphs are especially useful for showing changes over time.
Example Output:
Line graphs are especially useful for showing changes over what?