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: wiring requires metals. 
Question: What can you use in wiring to produce current?

Output: metals.


Input: Consider Input: Fact: memory cells help keep people from getting sick. 
Question: What helps keep people from getting sick?

Output: Memory cells.


Input: Consider Input: Fact: foil can be changed from smooth into compacted by physical force. 
Question: what can be changed from smooth to compacted by physical force?


Output: foil.