About: http://webisa.webdatacommons.org/184387113

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	I can not imagine what is so super duper secret but if it is whatever gives you the most control with the biggest key that only you have access to is the best option.
http://www.w3.org/ns/prov#wasQuotedFrom	dpreview.com