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.

[EX Q]: Fact: a drum has a vibrating movement. 
Question: what has vibrating movement?
[EX A]: drum.

[EX Q]: Fact: wiring requires metals. 
Question: What can you use in wiring to produce current?
[EX A]: metals.

[EX Q]: Fact: seat belts are used for preventing injuries to passengers in vehicles. 
Question: What are used for preventing injuries to passengers in vehicles?
[EX A]:
seat belts.