About: http://webisa.webdatacommons.org/207191998

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	No, it is not set in stone; yes, it changes with time; and there are different styles / conventions for different types of writing.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com