<?xml version="1.0" encoding="utf-8" ?>
<rss version="2.0"
    xmlns:atom="http://www.w3.org/2005/Atom">
    <channel>
        <item>
            <atom:link type="application/rss+xml" rel="replies" href="http://www.example.com/entry/321/feed/rss/" />
        </item>
    </channel>
</rss>
