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

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

Example Input: Urea is made in the liver and excreted in urine.
Example Output: What is made in the liver and excreted in urine?

Example Input: Oxygen group is group 16 of the periodic table referred to.
Example Output:
What is group 16 of the periodic table referred to?