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

Output: in its arms.


Input: Consider Input: Fact: comparators, flats, and microscopes could be used for observing materials up close. 
Question: comparators, flats, and microscopes could be used for observing materials how?

Output: up close.


Input: Consider Input: Fact: adding salt to water decreases the melting point of water. 
Question: What decreases the melting point of water?


Output: adding salt.