I would provide the link of the fake news story that you are going to write about, things to include is explain what the story is about, what is the source and what makes it "fake news" in your view?
a description with title of what the story is-
title author and or publisher, source what the story is about.
why you think is fake
what kind of research needed to be able to find support the topic.
https://www.nbcnews.com/tech/tech-news/facebook-removes-troll-farm-posing-african-american-support-donald-trump-n1236056