<http://schema.org/description>
"Brett Tabke posted a thread at WebmasterWorld showing that the SiteMaps Protocol is backed by Google, Microsoft and Yahoo!Sitemaps are an easy way for webmasters to inform search engines about pages o"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/006718.html>