<http://schema.org/description>
"I see this all the time, a forum thread, where a webmaster knows his rankings are suffering in Google because he was hit by Penguin because he has a lot of really bad, manipulative links.  A Webmaster"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-bad-links-remove-17863.html>