About: http://webisa.webdatacommons.org/24579266

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	You might have gotten the add-on, and probably an independent Google Updater program as well, installed by installing one of Google's programs, such as Google Earth or Chrome.
http://www.w3.org/ns/prov#wasQuotedFrom	superuser.com