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 vehicle in use requires navigation. 
Question: A vehicle in use requires?
Example Output: navigation.

Example Input: Fact: bottom dwelling organisms can be filter feeders. 
Question: What can bottom dwelling organisms be?
Example Output: filter feeders.

Example Input: Fact: fungus and algae benefit from their relationship. 
Question: what do fungus and algae share?
Example Output:
relationship.