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: Fertilization occurs when haploid gametes unite. 
Question: What occurs when haploid gametes unite?
Example Output: fertilization.

Example Input: Fact: Fanning a fire helps it continue to burn. 
Question: What helps a fire continue to burn?
Example Output: fanning.

Example Input: Fact: insects can destroy grains. 
Question: what can insects destroy?
Example Output:
grains.