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: measuring diamonds requires scratching them. 
Question: What can you scratch to measure?

Output: diamonds.


Input: Consider Input: Fact: Chemical weathering causes FE in rock to oxidize. 
Question: Chemical weathering causes what in rock to oxidize?

Output: Fe.


Input: Consider Input: Fact: a graduated cylinder can be used to measure volume of Gasoline. 
Question: A graduated cylinder can be used to measure volume of?


Output: Gasoline.