Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

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

[EX Q]: Fact: Forests are being hurt by the color of an environment from changing green to brown. 
Question: What is hurt when the environment changes from green to brown?
[EX A]: forests.

[EX Q]: Fact: Energy used to heat an office is by a heating system. 
Question: What contains energy to raise the temperture of an office?
[EX A]:
heating system.