This is an example topic (i.e. an issue or question to be discussed).
This is an example claim title (i.e. a summary of an argument or point of view). Anyone can add claims to a topic.
I'm a claim description. This is where you flesh out your claim using specifics (e.g. data points or factual events). The sources you add have to support your claims—otherwise users will downvote your sources, which affects your karma and the visibility of your contributions.