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: nerves endings can feel cold. 
Question: What can nerve endings feel?
[EX A]: cold.

[EX Q]: Fact: Cancer cells form new cells out of control. 
Question: Cancer cells form new cells how?
[EX A]: out of control.

[EX Q]: Fact: Using solar energy to generate power reduces greenhouse gases. 
Question: What can be used to reduce greenhouse gases while generating power?
[EX A]:
Solar energy.