About: http://webisa.webdatacommons.org/178859733

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	The best option is to comment in that bug, say that you can reproduce in Firefox 17 (and also test with Firefox nightly) and see what the devs say.
http://www.w3.org/ns/prov#wasQuotedFrom	mozilla.org