About: http://webisa.webdatacommons.org/358938904

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	But do not try to spam them, I think Bing said something like they only use them if they are relevant to your content, adding different spelling and mis-spelt keywords was a recommendation
http://www.w3.org/ns/prov#wasQuotedFrom	moz.com