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

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: Hydras and sea anemones are examples of apolyp.
Example Output: Hydras and sea anemones are examples of what form?

Example Input: There are three chambers in an amphibian heart.
Example Output:
How many chambers does an amphibian heart have?