instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Darwin believed in gradualism.
answer:
Did darwin believe in punctuated equilibrium or gradualism?


question:
Carbon 14 isotope of carbon is typically used to date ancient items.
answer:
What isotope of carbon is typically used to date ancient items?


question:
Examples of organ systems in a human include the skeletal, nervous, and reproductive systems.
answer:

Examples of organ systems in a human include the skeletal, nervous, and what?