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: Each starfish arm contains part of the water vascular system. 
Question: Where does a starfish have its water vascular system?
Example Output: in its arms.

Example Input: Fact: boulders are formed by snow, ice, and rock melting sometimes. 
Question: what melts sometimes to form boulders?
Example Output: snow, ice, and rock.

Example Input: Fact: nucleotides bind together to form RNA. 
Question: what do nucleotides bind together to form?
Example Output:
RNA.