About: http://webisa.webdatacommons.org/430343763

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	Given that the author is a professor and consultant, I understand why they exist: these are teaching aids, information you can easily pull up and show a student, client, or other developer to help explain a concept or algorithm.
http://www.w3.org/ns/prov#wasQuotedFrom	realtimerendering.com