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

Input: Consider Input: Circannual behavioral rhythms are linked to the yearly cycle of seasons.

Output: What type of behavioral rhythms are linked to the yearly cycle of seasons?


Input: Consider Input: Lipids are available to the body from three sources.

Output: Lipids are available to the body from how many sources?


Input: Consider Input: The ionic end of a detergent can either be a sulfate or sulfonate.


Output: The ionic end of a detergent can either be a sulfate or what?