<http://schema.org/description>
"Google announced that you can now opt out of give new ad format options for your AdSense ads.Google said, \"you can opt out of the following advanced ad format features:\"Similar-sized display ads: Show"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-adsense-ad-format-opt-out-17267.html>