About: http://webisa.webdatacommons.org/98455274

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	here is how I authenticate with my kerberos server, but you might need to tweak it for yours (hence me including the link):
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com