<http://schema.org/description>
"Google announced two updates this week for AdSense. One, that they've upgraded the AdSense ad unit creation process to make it easier.  Two, that they have two new ad unit sizes added to the mix of ad"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-adsense-ad-units-18664.html>