<http://schema.org/description>
"Google announced they are expanding the +Post Ads to all advertisers who have over 1,000 followers on their Google+ Pages.  In addition,  they are also testing two new features for +Post Ads.(1) Promo"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-post-ads-more-18425.html>