<http://schema.org/description>
"There are several reports in the Google Webmaster Help forums with bad errors on geo sitemaps.Webmasters are claiming that all of a sudden their geo sitemaps files are returning an \"invalid XML tag\" e"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/geo-sitemaps-xml-invalid-14805.html>