instruction:
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.
question:
Fact: the moon revolving around the Earth causes the new moon. 
Question: the moon revolving around the Earth causes what?
answer:
new moon.


question:
Fact: Evergreens are mostly trees with woody trunks. 
Question: What type of trunk does evergreen usually have?
answer:
woody.


question:
Fact: the simplest known organisms often infect bacteria. 
Question: what often infects bacteria?
answer:

simplest known organisms.