<http://schema.org/description>
"A Google Webmaster Help thread has one webmaster complaining his site is slowly dropping out of the Google index and wanted to know why.JohnMu from Google explained that one of the reasons is because "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-site-down-rankings-13874.html>