About: http://webisa.webdatacommons.org/236282659

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	is in my opinion better and open source as well. http://wz2100.net/ - Graphics are a little dated but the gameplay is very addictive.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org