Given a statement, generate a question such that the answer is contained in that statement.

[EX Q]: The volume of an item can be used to measure the mass of the object.
[EX A]: The volume of an item can be used to measure what?

[EX Q]: jaws make sharks excellent predators
[EX A]: What makes sharks excellent predators?

[EX Q]: A mineral made of carbon is used for making pencils.
[EX A]:
What is a mineral made of?