TASK DEFINITION: Given a statement, generate a question such that the answer is contained in that statement.
PROBLEM: breaks heal when osteoclasts form new tissue made of calcium and protein.

SOLUTION: What do osteoclasts form when osteoclasts form new tissue?

PROBLEM: Incinerators generate pollution

SOLUTION: What generates pollution?

PROBLEM: The volume of an item can be used to measure the mass of the object.

SOLUTION:
The volume of an item can be used to measure what?