About: http://webisa.webdatacommons.org/339645581

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	sp3000firefox works around that by closing a new tab automatically if the only thing there was a load that went to an external helper, dunno if that is since 2 or 315:30
http://www.w3.org/ns/prov#wasQuotedFrom	pov.lt