RSS $($Really Simple Syndication$)$ is an XML application for distributing web content that changes frequently. Many news$-$related sites, weblogs and other online publishers syndicate their content as an RSS Feed to whoever wants it$.$ In this lab, you will write code that extracts information from an RSS $($version $2\mathrm{.}0)$ document loaded into an XMLTree object.

RSS $2\mathrm{.}0$ documents have the following format: