<http://schema.org/description>
"The big Google news from yesterday was that they officially launched the Google +1 button for webmasters and site owners to place on their sites.  You can get the code to add the button to your site b"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-plus-one-button-13499.html>