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.

Fact: Power outages can cause a light bulb to go off. 
Question: What do power outages do to light bulbs?
turn them off.

Fact: Competition may lead to release of adrenaline. 
Question: Competition may lead to release of?
adrenaline.

Fact: Some viruses have an envelope of enzymes and proteins. 
Question: What might have an envelope of proteins and enzymes?

some viruses.