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.

Input: Consider Input: Fact: Some insects communicate with chemicals called pheromones. 
Question: How do some insects communicate?

Output: pheromones.


Input: Consider Input: Fact: Complex chemistry occurs in cells. 
Question: What occurs in cells?

Output: complex chemistry.


Input: Consider Input: Fact: Many corals secrete a hard outer covering that builds up to become a coral reef. 
Question: Many corals secrete what to form a coral reef?


Output: hard outer covering.