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: Genes are molecules that contain a single protein. 
Question: what are molecules that contain a single protein?

Output: genes.


Input: Consider Input: Fact: Exercise can teach animals how to behave. 
Question: What can teach animals how to behave?

Output: exercise.


Input: Consider Input: Fact: If the smallest unit of an element is neutral and it loses an electron a negative charge is formed. 
Question: If the smallest unit of an element is neutral and it loses an electron what charge is formed?


Output: negative.