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: Some insects communicate with chemicals called pheromones. 
Question: How do some insects communicate?
Example Output: pheromones.

Example Input: Fact: when individuals move into or out of a population, it's random. 
Question: what is it when individuals move into or out of a population?
Example Output: random.

Example Input: Fact: Lead causes harm to living things. 
Question: Which causes harm to living things?
Example Output:
Lead.