instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Insulin is made up of two polypeptide chains.
answer:
Insulin is made up of how many polypeptide chains?


question:
Spring tides are created when the sun and moon's tides match.
answer:
Which type of tides are created when the sun and moon's tides match?


question:
Mating with no strong pair-bonds is called promiscuous mating.
answer:
Mating with no strong pair-bonds is called?