<http://schema.org/description>
"Google launched ad sitelinks back in November of 2009.  Since then we learned the impact they have on organic results, at least on click throughs.But how does Google determine which ad sitelinks to sh"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/adwords-sitelinks-experiment-13332.html>