About: http://webisa.webdatacommons.org/220818567

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	Google says that Google Plus is supported through this API, as well as third-party services such as Foursquare and GitHub.
http://www.w3.org/ns/prov#wasQuotedFrom	gigaom.com