About: http://webisa.webdatacommons.org/222009781

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	Problem is that nobody has seen a real one yet except for a prototype or two.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org