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: Algae play significant roles as producers oceans. 
Question: In the ocean, algae play a significant role as what?
producers.

Fact: infection can cause inflammation. 
Question: _can cause inflammation?
Infection.

Fact: sheep can be used for keeping warm. 
Question: what can be used for keeping warm?

sheep.