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.

Input: Consider Input: Fact: preventing the transfer of energy from an organism's body causes it to keep warm. 
Question: what can preventing the transfer of cause the body to keep warm in an organism?

Output: energy.


Input: Consider Input: Fact: the planet being buried in snow and ice for millions of years at a time is relatively rare. 
Question: What is true about the planet being buried in snow and ice for millions of years at a time?

Output: it is relatively rare.


Input: Consider Input: Fact: cycles of freezing and thawing water cause the most important form of mechanical weathering. 
Question: Freezing and thawing cause what type of weathering?


Output: mechanical.