About: http://webisa.webdatacommons.org/124394488

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 I would like to know how it work... you can only invite people you have not yet invited... their is a Firefox plug-in that allows to select all your friends at once when inviting - now this should just work the other way around.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com