<http://schema.org/description>
"In October 2010, Bing got something Google couldn't get, a partnership with Facebook to access Facebook data and incorporate that data into Bing results.  The deal was, Bing barely used that Facebook "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/bing-facebook-personalization-13416.html>