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

Ex Input:
Half-life property of carbon and other elements can be used to date fossils and rocks, among other things.

Ex Output:
What property of carbon and other elements can be used to date fossils and rocks, among other things?


Ex Input:
Momentum is directly related to both mass and velocity.

Ex Output:
Momentum is directly related to both mass and?


Ex Input:
Insulin is made up of two polypeptide chains.

Ex Output:

Insulin is made up of how many polypeptide chains?