About: http://webisa.webdatacommons.org/447740626

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	Upgraded from Lion, but I never really noticed the feature, nor any problems with it interfering with MiddleClick (which yes, is a third party app).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com