About: http://webisa.webdatacommons.org/451989112

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	<invalid-namespace/> -- the stream namespace name is something other than http://etherx.jabber.org/streams" or the dialback namespace name is something other than jabber:server:dialback.
http://www.w3.org/ns/prov#wasQuotedFrom	xmpp.org