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: Heat is necessary for the survival of animals. 
Question: What is necessary for the survival of animals?
Example Output: heat.

Example Input: Fact: Water must not be polluted to be safe. 
Question: What can happen to water to make it unsafe?
Example Output: Pollution.

Example Input: Fact: Desert animals adjust to dry climate. 
Question: What kind of climate do desert animals adjust to?
Example Output:
dry.