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: A plant requires leaves for survival. 
Question: What is required by a plant for surival?
Example Output: leaves.

Example Input: Fact: nails prevent water loss. 
Question: what do nails prevent?
Example Output: water loss.

Example Input: Fact: if an oak falls then sunlight becomes available to surrounding plants. 
Question: what falls making sunlight available to surrounding plants?
Example Output:
oak.