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.

Example Input: Fact: wind causes wearing away of rock. 
Question: Wind can cause?
Example Output: the wearing away of rock.

Example Input: Fact: dogs require nutrients to grow and heal. 
Question: what requires nutrients to grow and heal?
Example Output: dogs.

Example Input: Fact: Hair is a fiber that is not found in reptiles or birds. 
Question: What is a fiber that is not found in reptiles or birds?
Example Output:
hair.