<http://schema.org/description>
"About six-months ago, Google unleashed a major update to Penguin, the Penguin 2.1 update.  The earlier feedback from that update was that is was a big impact to webmasters and mostly SEOs who used lin"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-penguin21-poll-18411.html>