<http://schema.org/description>
"Irving Weiss, the SEO lead at Vitals.com, shared a thread with me on Moz that in some cases, Google is only showing the reviews rich snippets when the query is a site command.Here is an example. If yo"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-review-rich-snippets-site-command-18829.html>