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

Example Input: The water in some springs are hot because they're heated by hot magma.
Example Output: The water in some springs are hot because they're heated by what?

Example Input: Hookworms infest the intestines.
Example Output: What part of the body do hookworms infest?

Example Input: Matching donor and recipient blood types is important because different blood types have different types of antibodies.
Example Output:
Matching donor and recipient blood types is important because different blood types have different types of what?