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: predicting weather requires meteorology. 
Question: What requires meteorology?
Example Output: predicting weather.

Example Input: Fact: claws are used to catch arthropods by some predators. 
Question: what do predators use claws to catch?
Example Output: arthropods.

Example Input: Fact: some parasites adhere to cell surfaces. 
Question: some what adhere to cell surfaces?
Example Output:
parasites.