About: http://webisa.webdatacommons.org/8266904

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	This is most likely why the username is null because the value used in the plugin may not map to the correct attribute OVD is expecting.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com