<http://schema.org/description>
"We've been covering Google experimenting with a new AdWords ad format, where the ad is labeled in a yellow ad banner for a while now.  More and more people and searchers are seeing it every day but Go"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-yellow-ad-format-slip-17769.html>