About: http://webisa.webdatacommons.org/45225880

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 could create your own (ala alnites suggestion) or you could use a "signals and slots" library such as Boost.Signals .
http://www.w3.org/ns/prov#wasQuotedFrom	gamedev.net