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: chemical weathering causes iron to turn brown, red, or orange. 
Question: What does chemical weather cause iron to do?

Output: Change color to brown.


Input: Consider Input: Fact: animals use sound to find a mate. 
Question: What do animals use to find a mate?

Output: sound.


Input: Consider Input: Fact: fur and fat has a positive impact on an animal's survival. 
Question: What has a positive impact on an animal's survival?


Output: fur and fat.