<http://schema.org/description>
"Reported over at WebmasterWorld, people are noticing favicons on Google AdSense Wide Skyscraper Ad (160x600).  Reports dictate that they were displaying favicons of Register.com, Amazon.com, eBay.com "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/001979.html>